bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sequential Sparse Blind Source Separation for Non-Linear Mixtures
Authors: Kervazo C , Bobin J 
Published: March 2020

Abstract
Linear Blind Source Separation (BSS) has known a tremendous success in fields ranging from biomedical imaging to astrophysics. In this work, we however propose to depart from the usual linear setting and tackle the case in which the sources are mixed by an unknown non-linear function. We propose to use a sequential decomposition of the data enabling its approximation by a linear-by-part function. Beyond separating the sources, the introduced StackedAMCA can further empirically learn in some settings an approximation of the inverse of the unknown non-linear mixing, enabling to reconstruct the sources despite a severely ill- posed problem. The quality of the method is demonstrated experimentally, and a comparison is performed with state-of-the art non-linear BSS algorithms.
Convergence of regularization methods with filter functions for a regularization parameter chosen with GSURE
Authors: Sixou B. 
Published: March 2020

Abstract
In this work, we show that the regularization methods based on filter functions with a regularization parameter chosen with the GSURE principle are convergent for mildly ill-posed inverse problems and under some smoothness source condition. The convergence rate of the methods is not optimal but the efficiency increases with the smoothness of the solution.
A learning-based inversion strategy for passive wireless detection of crowds
Authors: Polo Alessandro , Abdul Hannan Mohammad , Gottardi Giorgio , Viani Federico 
Published: March 2020

Abstract
Passive indoor localization is an emerging technology for the detection and tracking of transceiver-free entities using wireless infrastructures. Customized wireless sensors are often used for the acquisition of suitable wireless signals. In this work, neither hardware customization nor dedicated deployment are introduced. The wireless signal transmitted by standard Wi-Fi access points is processed to solve an inverse problem for the real-time detection of crowds. Towards this end. a wavelet decomposition of the acquired data is combined with a learning- by-example (LBE) strategy in order to learn the complex relation between crowd presence and signal perturbations. Experimental results show the capabilities of the proposed solution in detecting people within a real Wi-Fi enabled test site. The obtained performance points out that a standard Wi-Fi network can be profitably adopted as a low-cost, and scalable solution to support crowd management in many applicative fields.
A convex optimization-based inversion method for the synthesis of monopulse linear arrays
Authors: Boulos Federico , Dall’Asta Luca , Gottardi Giorgio , Abdul Hannan Mohammad , Polo Alessandro , Salas-Sanchez Aaron 
Published: March 2020

Abstract
In this work, the design of monopulse linear arrays generating sum and difference patterns with a partially shared beam forming network is addressed as an inverse problem and solved through a suitable inversion strategy. The array tails are organized into sub-arrays controlled by amplitude weights, while the remaining array elements have two independent amplitude coefficients, one for each beam. The optimal values of both common and independent excitations are determined by means of a convex optimization technique able to retrieve the globally optimal solution whether existing. Sucli a synthesis method allows one to include user- defined upper power bounds on the secondary lobes as well as to arbitrary decide the layout (i.e., the number and the sizes of the sub-arrays) of the common part. Representative results are reported and discussed to assess the effectiveness and the efficiency of the proposed technique.
Study on preparation and stability of antioxidant peptides from acer truncatum seed
Authors: Liu Susu , Zhou Qingli , Sun Hua 
Published: March 2020

AbstractThe acer truncatum seed protein was hydrolyzed by alcalase, neutrase, papain and trypsin, respectively, to get four kinds of peptide fractions. Ant oxidative activities of all peptide fractions were evaluated by degree of hydrolysis and DPPH radical scavenging activity. Trypsin peptide (TP) exhibited the highest ant oxidative activity compared to other peptide fractions. Single factor test was applied to optimize the hydrolysis condition. The optimum conditions obtained were substrate concentration of 4 %, enzyme amount of 16000 U/g, enzymatic hydrolysis time of 6 h, and pH of 7.8.
The Influence of Different Enzymolysis Methods on the Components of Enzymolysis Products
Authors: Fan Xiaopan , Peng Jing , Li Situ , Wu Hengrui , Liang Yuxuan , Ma Lizhen 
Published: March 2020

Abstract
Beef-bone protein hydrolysates were obtained by different enzymatic hydrolysis schemes, including Flavourzyme (F), Protamex (P), Flavourzyme followed by Protamex (Fp), Protamex followed by Flavourzyme (Pf), and combination of Flavourzyme and Protamex (DE). Samples without any enzymes served as the control (C). The degree of hydrolysis (DH), free amino acids and molecular weight (MW) distribution were evaluated. The results indicated that the applied enzymatic hydrolysis significantly increased the DH, contents of low molecular weight peptides and free amino-acids compared with that of group C.
Research on key technology of intelligent production line of aircraft structural parts based on intelligent manufacturing
Authors: Liu Xinyu , Qiao Miaomiao , Meng Biao 
Published: March 2020

Abstract
The rapid development of new generation information technology and artificial intelligence and its integration in the manufacturing field have spurred advanced manufacturing countries to actively explore the development strategy of intelligent manufacturing, in order to realize the interconnection and interoperability of manufacturing processes and life cycle data. And the dynamic optimization of decision-making, ultimately achieving manufacturing automation, flexibility, intelligence, and synergy. Starting from the characteristics of intelligent manufacturing, combined with technical practice and theory, it mainly analyzes the key technologies of intelligent production lines for aircraft structural parts to improve the intelligent manufacturing of aircraft structural parts, from equipment technology, intelligent production technology, intelligent production execution technology, intelligent management technology. In one aspect, the technologies involved in the production line are interpreted, namely, data acquisition technology, intelligent equipment technology, intelligent process design technology, production line modeling and simulation technology, production line maintenance guarantee technology, and intelligent management and control technology.
Determination of Arctiin in Yinqiaojiedu Granules by Capillary Electrophoresis
Authors: Wang Huiqin , Liu Haixing , Wang Lintong 
Published: March 2020

Abstract
This paper investigated the determination of arctiin content in Yinqiaojiedu granules by high performance capillary electrophoresis (HPCE) method. The borax solution of 37.5 mmol concentration containing 12.5% methanol was chosen as buffer solution. The experiment was performed at a constant voltage of 16 kV and UV detection wavelength of 277 nm. The content of arctiin in Yinqiaojiedu granules was 1.99mg/g (RSD=2.44%) (n=7). The recovery was in the range of 87.1%-121.6% (n=5). This method is suitable for the detection of the content of arctiin in Yinqiaojiedu granules.
Study on Elevating Sleep Efficacy of γ-Aminobutyric Acid
Authors: Sun Shaojing , Lu Zhen , Shi Yanli , Zhao Lianzhen , Guo Xueping 
Published: March 2020

Abstract
The purpose of this study is to investigate the effects of γ-aminobutyric acid on sleep improvement in mice. According to the method of Technical Standard for Health Food Inspection and Evaluation, animals were divided into three experimental groups. Group 1: Directly inducing sleep and prolonging sleep time experiment; Group 2: Subthreshold dose of sodium pentobarbital for hypnosis experiment; Group 3: Shortening sleep latency experiment. In each experimental group, 40 mice were randomly divided in four subgroups according to their body weight. After 30 days’ oral intake of different doses of γ-aminobutyric acid by mice, it is found that γ-aminobutyric acid can prolong the sleep time of mice hypnotized by pentobarbital sodium and shorten the sleep latency of mice hypnotized by barbital sodium. Meanwhile, there were no obvious abnormal changes in weight of mice. No side-effects were observed during the experiments. These results demonstrate that γ-aminobutyric acid produced by Bloomage Biotechnology Corporation Limited, has sleep aid function.
The Distributed Representation of Knowledge Graphs Based on Pseudo-Siamese Network
Authors: Wei Zhuo , Zhang Ye , Wang Fan , Liu Shuai 
Published: March 2020

Abstract
This paper proposes to transform the (head entity, relation) and tail entity into the same feature space through the Pseudo-Siamese network, and calculate the similarity between the two parts in this feature space, embedding vector of entity and relation have been optimization for constraint conditions.In this paper, the triple is regarded as the abstraction of the answer pair in the factual simple question-answering. According to the corresponding relation of the answer, the corresponding relation between the (head entity, relation) and the tail entity in the triple is obtained, and the constraint characteristics of the elements in the triple are modeled. And then by constructing inverse relations to build a new triple, thus the number of training samples is expanded to improve the learning results of the model.
Summary of Lead-acid Battery Management System
Authors: Wang Pengcheng , Zhu Changqing 
Published: March 2020

Abstract
Lead-acid batteries are widely used in all walks of life because of their excellent characteristics, but they are also facing problems such as the difficulty of estimating electricity and the difficulty of balancing batteries. Their large-scale application is partly due to the powerful battery management system. This paper reviews the current application of parameter detection technology in lead-acid battery management system and the characteristics of typical battery management systems for different types of lead-acid batteries, and looks forward to the development trend of lead-acid battery monitoring system.
Discussion of the Corrosion Mechanism of Drum in a Boiler
Authors: Huang Song , Xiong Shutao , Chen Jie , Zhao Zhongguo , Li Bin 
Published: March 2020

Abstract
Corrosion mechanism of the drum in a boiler was studied by macroscopic observation, hardness and thickness tests, and corrosion products analysis. The damage surface displays a large unsmooth corrosion area with decreased hardness. The materials failed due to dissolved oxygen in feed water and the corrosion process was suggested to be divided into four stages. The formation of the morphologies was also described.
Research Progress in the Synthesis of Esters
Authors: Feng Simin 
Published: March 2020

Abstract
Ester compounds are widely found in nature and play an important role in organic synthesis. There are various methods for the synthesis of esters. This paper focuses on the simple carboxylic acid, carboxylic acid derivative and alcohol react to form ester; the reaction of alcohols and alcohols to form esters, aldehydes and alcohols to form esters, and the synthesis of esters for new catalysts and catalytic systems. The gradual realization of industrialized production has been prospected. I hope to provide more reference and inspiration to researchers.
The Crystal Structure of 2-Amino-4-Hydroxy-6- Methylpyrimidine-Trihydrate
Authors: Wang Lihua 
Published: March 2020

Abstract
The crystal structure of 2-amino-4-hydroxy-6-methylpyrimidine-trihydrate was characterized by single crystal X-ray diffraction. The crystal data: C10H20O5N6, triclinic, P-1, a = 6.8770 (14) Å, b = 10.486 (2) Å, c = 11.320 (2) Å, V = 778.9 (3) Å3, Z = 2, Rgt = 0.0646, wRref (F2) = 0.2144, T = 293 (2) K. The title compound molecules form 1D chained structure by the interaction of hydrogen bonds. And the one-dimensional chains further form three-dimensional network structure by interactions of hydrogen bonds and pyrimidine rings.
Synthesis and Crystal Structure of A Novel Cd (II) Complex with Pyridine-2-aldehyde-4- (2-methylphenyl)-3- thiosemioarbazlde Ligand
Authors: Tai Xishi , Xue Weixi 
Published: March 2020

Abstract
A new Cd (II) complex, [Cd (L)2]·(NO3)2·H2O (L = pyridine-2-aldehyde-4-(2-methylphenyl)-3-thiosemioarbazlde) was synthesized by one-pot synthesis method by pyridine-2-aldehyde, 4- (2-methylphenyl)-3-thiosemioarbazlde and Cd (NO3)2·4H2O. The structure of Cd (II) complex was characterized by single crystal X-ray diffraction. In the molecule, the Cd (II) ion is six-coordinated with four nitrogen atoms and two sulfur atoms of two pyridine-2-aldehyde-4- (2-methylphenyl)-3- thiosemioarbazlde ligands to form an distorted octahedral coordination geometry. The Cd (II) complex displays a 3D network structure by π-π interaction of benzene rings and pyridine rings of pyridine-2-aldehyde-4- (2-methylphenyl)-3-thiosemioarbazlde ligands.
View Learning Organization in a Situational Perspective
Authors: Pan Tao , Hu Tao , Geng Juan 
Published: March 2020

Abstract
Learning organization is an emerging management theory that many scholars and practitioners focus on recent years. However, it is not always applicable for all organizations. After reviewing the concept of learning organization and debates from scholars worldwide, this article analyzes some factors may impact the form of an organization, which include external environment, business strategy, technology and its transformation, the stage and scale of the organization and institutional culture. From the situational view, the author conclude that learning organization is not the only right option for every organization all the time, bureaucratic organization and organizational unlearning might be the alternative options to obtain the competitive advantages. The organization should keep a continuous adjustment accordingly.
Identification of Microorganisms of Bean Curd Sauce and Its Physiological Characteristics
Authors: Sui Ming , Zhang Fengying , Li Junru , Zhou Wen , Shu Xuexiang 
Published: March 2020

Abstract
Morphological identification of molds is usually to observe the colony morphology of molds on the medium, such as the diameter, texture, color and presence of soluble pigments and exudates: as well as their individual morphological characteristics, including the segmentation, the head of the congregation, the branch of the stalk, the top capsule, the hyphae, etc., consult the fungal identification manual, and obtain the identification results. This method is simple in operation, intuitive in results, and has high accuracy and stability. In this paper, the morphological identification of the selected strains was carried out, and after the identification was completed, the growth physiological characteristics of the strains under different temperatures and pH conditions were further studied, which was optimized for the process of making and fermentation of bean paste. Provide a theoretical basis.
Research on Physical Layer Conformance Testing Technology of Ethernet Interface
Authors: Zhao Qianhong , Han Lu , Liu Mingbo , Sun Wenjie , Yang Yang 
Published: March 2020

Abstract
The Ethernet physical layer is located at the bottom of the network structure and is responsible for the transmission and reception of electrical signals. The performance of the physical layer will directly affect the communication quality of network devices. According to the requirements of the IEEE 802.3-2000 and ANSI X3.263-1995 standards for the physical layer of the Ethernet, the physical layer conformance test standards and requirements of the 100Base-TX and 1000Base-T network interfaces are studied, and the physical layer is designed consistently. The test method shows that the test data is accurate and the test method can meet the requirements related to the physical layer conformance test.
Effects of paclobutrazol on bud, plant height and antioxidant enzyme activities of Cymbidium hybridum
Authors: Li Xiangting , Yang Weifei , Wan Jiyu , Liang Jian 
Published: March 2020

Abstract
Cymbidium hybridum is a favourite flower of the annual flower. Its flower bud number, plant type and morphological characteristics affect its ornamental effect. This experiment explored the effects of 50mg/L, 100mg/L, 200mg/L, 300mg/L, 400mg/L paclobutrazol on the enzyme activity, flower bud number and plant height dwarfing of the antioxidant system of Cymbidium hybridum. The results showed that: 1. Each concentration treatment can promote flower bud differentiation, 300mg/L is the best. 2. Paclobutrazol has an inhibitory effect on plant height, and with the increase of concentration, the inhibition is more obvious, and the inhibition of 400mg/L is the strongest. 3. Paclobutrazol can increase the enzyme activity of the antioxidant system of Cymbidium hybridum. The activity of SOD and POD is promoted by low concentration and inhibited by high concentration. The contents of CAT and soluble protein in each concentration were higher than those in the control group.
Evolutionary Game Analysis of Remanufacturing Entry Decision of Manufacturers and Distributors
Authors: Wei Yang 
Published: March 2020

Abstract
The economic and environmental benefits of remanufacturing have been widely recognized.In the context of competition between manufacturers and distributors in closed-loop supply chain.The dynamic evolution process of manufacturer and distributor’s remanufacturing decision-making is analyzed by evolutionary game model. By analyzing the stability of the system, the optimal strategy combination is obtained. The results show that the equilibrium results of system evolution are affected by the authorization fees paid by distributors to manufacturers, the difficulty of recycling remanufactured products and the technical level. When the relationship between profit and authorization fees of remanufactured products changes, the system will evolve to different equilibrium. Finally, the correlation is verified by numerical simulation. Conclusion.
Analysis of Volatile Components in Gui Qi Mango Fruit Wine
Authors: Shuai Xixiang , Zhang Ming , Ma Feiyue , Du Liqing 
Published: March 2020

Abstract
The volatile components in Gui Qi Mango fruit wine analyzed by headspace solid-phase microextraction-gas chromatography-mass spectrometry. Results showed that 32 kinds of volatile components were detected in Gui Qi Mango fruit wine, including 7 kinds of alcohols (65.69%), 17 kinds of esters (28.92%), 4 kinds of alkanes (2.16%), 3 kinds of aldehydes (0.36%), 2 kinds of olefins (0.32%), 1 kinds of ketones (0.41%), 1 kinds of phenols (0.2%). In the all of the volatile components, the relative content of alcohols and esters were 94.61%. The fermentation process had an effect on the Gui Qi Mango fruit wine, and alcohols and esters played a positive role in the aroma of Gui Qi Mango fruit wine.
Effect of Camber on Non-axisymmetric End-wall Contouring Performance in Compressor Linear Cascades
Authors: Guo Hanwen , Jin Donghai , Liu Xiwu , Wang Bing , Gui Xinming 
Published: March 2020

Abstract
In order to explore non-axisymmetric end-wall’s mechanism of secondary flow control in compressor cascade, based on three-dimensional numerical calculation, this paper analysed effects of camber on non-axisymmetric end-wall contouring performance in compressor linear cascades. Results showed that non-axisymmetric end-wall reduces the corner separation loss mainly by suppressing the interaction between the crossflow and the suction surface boundary layer and decreasing the adverse pressure gradient on suction surface. Meanwhile, non-axisymmetric end-wall partly enhances the cross flow, increasing the secondary flow loss. At the incidence of 0°, the increase of the secondary flow loss caused by the non-axisymmetric end-wall plays the leading role when the camber angle is 20°; with the increase of camber angle, the reduction of corner separation loss becomes the leading role. At the incidence of 7°, the hub-corner stall is removed by the non-axisymmetric end-wall when the camber angle increases to 40°, decreasing the loss remarkably.
Analysis of microbial Diversity in Soy Sauce fermented grains by Illumina High-throughput sequencing technique
Authors: Liu Yongbi , Lin Qiao , Yan Dongmei , Cai Li 
Published: March 2020

Abstract
This paper mainly studies the diversity of microorganisms in the sauce fermented grains during the fermentation of soy sauce, and uses Illumina high-throughput sequencing technique to sequence the 16S region and ITS1 region of 7 samples respectively, and finds that the evolution law of microbial community structure in the whole soy sauce fermentation process is from complex to simple, It also shows that soy sauce fermentation environment has the effect of inhibiting microbial growth. The results of the analysis and sequencing can be: Staphylococcus (Staphylococcus), Klebsiella, Weiss and Bacillus, representing fungal strains of Aspergillus and abnormal Wickham yeast. In this study, the microbial colony structure during the fermentation production of soy sauce was analyzed, which was helpful to control the growth and propagation of microorganisms and ensure the quality and flavor of soy sauce products.
Flavor Analysis of Mrps Made from Different Enzymolysis Products by Gas Chromatography-Mass Spectrometry
Authors: Peng Jing , Li Situ , Wu Hengrui , Liang Yuxuan , Fan Xiaopan 
Published: March 2020

Abstract
Beef-bone protein hydrolysates were obtained by Flavourzyme (F), Protamex (P), Flavourzyme followed by Protamex (Fp), Protamex followed by Flavourzyme (Pf), and combination of Flavourzyme and Protamex (DE). Samples without any enzymes served as the control (C). Subsequently, the six hydrolysates were subjected to Maillard reaction for further investigation of the contribution of enzymatic hydrolysis to flavor. SPME-GC-MS (gas chromatograph-mass spectrometer) was applied to analyze the volatile substances and taste components. The results showed that the content of volatile compounds detected by the 6 samples was significantly different, while there was little difference in the type of compounds.
Investigation of failure of tubes in a heat exchanger for corrosion of dissolved oxygen
Authors: Huang Song , Chen Jie , Zhang Wenpin , Xiong Shutao 
Published: March 2020

Abstract
Failure of tubes in a heat exchanger was studied through analysis of Optical microscope, water analysis, X-ray diffraction pattern, and Scanning Electron Microscope. The damage tube displays a large unsmooth corrosion area with decreased hardness. Moreover, two different corrosion layers were found on the waterside of the pipe surface. The tube failed due to dissolved oxygen in feed water. Some recommendations of delaying corrosion was also put forward.