bluuebunny/crossref_metadata_2025 huggingface dataset:
On the reflexive-possessive markers in the Dongxiang language
Authors: Lefort Julie
Published: May 2020

Dongxiang is a language mainly spoken in the Autonomous District of southwest Gansu Province, People’s Republic of China. The Dongxiang nationality (東鄉族), as they are officially called, represents about 300,000 speakers. The Dongxiang language is one of the peripheral Mongolic languages spoken in the Gansu-Qinghai area, also known as the Shirongol group. These languages have been isolated from the other Mongolic languages and have been influenced by the surrounding Chinese dialects to a greater or lesser degree. They have common typological forms inherited from Middle Mongolian as well as features which have been induced by language contact. In this paper, I shall discuss the reflexive possessive markers in the Dongxiang language with a special focus on the suffix -nugvun. I shall show that the functions and use of Dongxiang reflexive possessive markers -ni and -ne are similar to those of the common Mongolic markers *-ni and *-xAn. The reflexive possessive marker -nugvun seems to be found in Dongxiang only and its origin remains unclear. In sources available from the 1980s to the 2000s, it is found associated with a restrictive number of pronouns, nouns, and idiomatic expressions and is highly grammaticalized. However, in more recent sources, it is found associated with a greater number of nouns and seems to have more semantic implications. Moreover, it is also found in a role which could be associated with that of a pronoun, and which can receive a plural and reflexive morphology. Nugvun can be used completely independently and is probably a calque of the Chinese dialect of Linxia 個家ge42 jia243
. This shows that it is most probably an innovation developed from the original suffix.
Reduced Ebola vaccine responses in CMV+ young adults is associated with expansion of CD57+KLRG1+ T cells
Authors: Bowyer Georgina , Sharpe Hannah , Venkatraman Navin , Ndiaye Pierre Birahim , Wade Djibril , Brenner Nicole , Mentzer Alex , Mair Catherine , Waterboer Tim , Lambe Teresa , Dieye Tandakha , Mboup Souleymane , Hill Adrian V.S. , Ewer Katie J.
Published: May 2020

CMV is associated with immunosenescence and reduced vaccine responses in the elderly (>70 yr). However, the impact of CMV in young adults is less clear. In this study, healthy UK and Senegalese adults aged 18–50 yr (average, 29 yr) were vaccinated with the Ebola vaccine candidate chimpanzee adenovirus type 3–vectored Ebola Zaire vaccine (ChAd3-EBO-Z) and boosted with modified vaccinia Ankara Ebola Zaire–vectored (MVA–EBO-Z) vaccine. CMV carriage was associated with an expansion of phenotypically senescent CD4+ and CD8+ T cells expressing CD57 and killer cell lectin-like receptor G1 (KLRG1), which was negatively associated with vaccine responses in both cohorts. Ebola-specific T cell responses induced by vaccination also contained significantly increased frequencies of terminally differentiated CD57+KLRG1+ cells in CMV seropositive (CMV+) individuals. This study suggests that CMV can also affect vaccine responses in younger adults and may have a particularly marked impact in many developing countries where CMV seroprevalence is almost universal.
Zinc(II) tetraphenylporphyrin on Au(111) investigated by scanning tunnelling microscopy and photoemission spectroscopy measurements
Authors: De Luca Oreste , Caruso Tommaso , Grimaldi Ilenia , Policicchio Alfonso , Formoso Vincenzo , Fujii Jun , Vobornik Ivana , Pacilé Daniela , Papagno Marco , Agostino Raffaele Giuseppe
Published: May 2020

Porphyrins are a versatile class of molecules, which have attracted attention over the years due to their electronic, optical and biological properties. Self-assembled monolayers of porphyrins were widely studied on metal surfaces in order to understand the supramolecular organization of these molecules, which is a crucial step towards the development of devices starting from the bottom-up approach. This perspective could lead to tailor the interfacial properties of the surface, depending on the specific interaction between the molecular assembly and the metal surface. In this study, we revisit the investigation of the assembly of zinc-tetraphenylporphyrins on Au(111) in order to explore the adsorption of the molecular network on the noble metal substrate. The combined analysis of scanning tunneling microscopy (STM) imaging and core levels photoemission spectroscopy measurements support a peculiar arrangement of the ZnTPP molecular network, with Zn atoms occupying the bridge sites of the Au surface atoms. Furthermore, we prove that, at few-layers coverage, the interaction between the deposited layers allows a relevant molecular mobility of the adlayer, as observed by STM and supported by core levels photoemission analysis.
Skin-inspired electronics: emerging semiconductor devices and systems
Authors: Ma Zhong , Kong Desheng , Pan Lijia , Bao Zhenan
Published: May 2020

Current electronics are driven by advanced microfabrication for fast and efficient information processing. In spite of high performance, these wafer-based devices are rigid, non-degradable, and unable to autonomous repair. Skin-inspired electronics have emerged as a new class of devices and systems for next-generation flexible and wearable electronics. The technology gains inspiration from the structures, properties, and sensing mechanisms of the skin, which may find a broad range of applications in cutting-edge fields such as healthcare monitoring, human-machine interface, and soft robotics/prostheses. Practical demands have fueled the development of electronic materials with skin-like properties in terms of stretchability, self-healing capability, and biodegradability. These materials provide the basis for functional sensors with innovative and biomimetic designs. Further system-level integrations and optimizations enable new forms of electronics for real-world applications. This review summarizes recent advancements in this active area and speculates on future directions.
Flexible inorganic oxide thin-film electronics enabled by advanced strategies
Authors: Zhang Tianyao , Yao Guang , Pan Taisong , Lu Qingjian , Lin Yuan
Published: May 2020

With the advent of human-friendly intelligent life, as well as increasing demands for natural and seamless human-machine interactions, flexibility and wearability are among the inevitable development trends for electronic devices in the future. Due to the advantages of rich physicochemical properties, flexible and stretchable inorganic oxide thin-film electronics play an increasingly important role in the emerging and exciting flexible electronic field, and they will act as a critical player in next-generation electronics. However, a stable strategy to render flexibility while maintaining excellent performance of oxide thin films is the most demanding and challenging problem, both for academic and industrial communities. Thus, this review focuses on the latest advanced strategies to achieve flexible inorganic oxide thin-film electronics. This review emphasizes the physical transferring strategies that are based on mechanical peeling and the chemical transferring strategies that are based on sacrificial layer etching. Finally, this review evaluates and summarizes the merits and demerits of these strategies toward actual applications, concluding with a future perspective into the challenges and opportunities for the next-generation of flexible inorganic oxide thin-film electronics.
A review of flexible halide perovskite solar cells towards scalable manufacturing and environmental sustainability
Authors: Davis Melissa , Yu Zhibin
Published: May 2020

The perovskite material has many superb qualities which allow for its remarkable success as solar cells; flexibility is an emerging field for this technology. To encourage commercialization of flexible perovskite solar cells, two main areas are of focus: mitigation of stability issues and adaptation of production to flexible substrates. An in-depth report on stability concerns and solutions follows with a focus on Ruddlesden-Popper perovskites. Roll to roll processing of devices is desired to further reduce costs, so a review of flexible devices and their production methods follows as well. The final focus is on the sustainability of perovskite solar cell devices where recycling methods and holistic environmental impacts of devices are done.
Numerical and experimental analysis of the 3D printed multi-material ankle-foot orthosis
Authors: Otepbergenov Temirlan , Smagulov Zhalgas , Abilgaziyev Anuar , Kurokawa Syuhei , Ali Md. Hazrat
Published: May 2020

The application of 3D printing in medicine is the major area to concern in the nearest future. Namely, it is convenient to additively manufacture the Ankle-Foot Orthosis (AFO) by fused-deposition modeling 3D printer. AFO is the device, used in medicine, to help the patients rehabilitate from the foot drop disease. The shape of the AFO may vary depending on the leg and foot specifications of the patient. In this paper, three models of the AFO were designed to analyze both numerically and experimentally, those are fracture propagation, stress distribution, and deformation. The regions with the highest stress concentration were altered with the Nylon 12, and this contributed to stress reduction. Three different gait instances were considered for the numerical simulations FEA software. Then, the simplest model to prototype and its modified versions were tested by the compression machine, and the results were compared with the numerical ones. This work demonstrated the significance of the optimization of the multi-material 3D printed AFO’s performance and comfort for patients.
Research on Trajectory Prediction Algorithm for Low-altitude Emergency Rescue Aircraft
Authors: Bin Hu , Fang Pan , Xiaoxia Qian
Published: May 2020

With the rapid development of general aviation, this aviation solution is widely used in emergencies such as natural disasters, major accidents, and social security problems because of its fast start-up speed, high rescue efficiency, and less restrictions. In this paper, state-dependent mode transition hybrid estimation (SDTHE) is combined with the improved intent inference algorithm (IIIA) to obtain a more accurate trajectory prediction algorithm. The algorithm overcomes the shortcoming of the hypothesis that the likelihood function is zero in the interactive multiple model algorithm (IMM), and considers the real-time motion state and mode of the aircraft, so that the final prediction result is more accurate.
Current Status of Research on Space Emergency Launch
Authors: Zhao Long , Xin Chao-Jun , Shi Mei-Ling , Yang Chen , Wang Huai-Peng
Published: May 2020

The realization of space rapid emergency launch needs to be developed from rapid response spacecraft, rapid response vehicle and space rapid launch infrastructure, so as to constitute the organic whole of “trinity” and give full play to the effectiveness of the system. Rapid response vehicle and space rapid launch infrastructure are the mainly two aspects that closely related to the construction of space rapid emergency launch force. This article mainly focuses on the research and analysis of the development status of foreign space emergency launch force from the above two aspects.
Intelligent Fault Diagnosis of Satellite Communication Antenna via a Novel Meta-learning Network Combining with Attention Mechanism
Authors: Chang Y H , Chen J L , He S L
Published: May 2020

Shipborne satellite communication antenna which is used for remote control plays an irreplaceable role in ships, it is necessary to monitor its operation state. However, obtaining sufficient fault information in mass monitoring data is particularly difficult, which greatly degrades performance of existing intelligent algorithms. In this paper, a novel meta-learning network is proposed to realize state recognition of shipborne antenna under small samples prerequisite. The network is constructed to improve generalization even though inputs collected under different operating conditions. Meta-learning network consists of sampler, feature extractor, auxiliary classifier and discriminator. It trains an adaptive pseudo-distance to evaluate the degree of correlation between different data, then realize classification task. Feasibility and effectiveness of the network are verified by three bearing datasets. Results show that the proposed method uses few samples to successfully classify mechanical data of shipborne antenna even with different rotating speed and random noise.
Level Assessment Criterion and Method for C4ISR Systems Interoperability
Authors: Shuang-ling Wang
Published: May 2020

In this paper, the concept of C4ISR systems interoperability is analyzed and the difference compared with traditional system interoperability is presented. The influencing factors of C4ISR system interoperability is analyzed from the overall framework of the US military global information grid. Six attributes including structure, application, facility, security, operation and maintenance, and data are selected. The selection process of evaluation attributes is described. Based on the enhanced interoperability maturity mode, the C4ISR system level attribute model is given by combing with the development trend of C4ISR system technology system. The grade of maturity and an evaluation index system for C4ISR systems interoperability are built and the index level reference model is designed. Combining qualitative assessment with quantitative assessment, an index synthesis criterion based on the mapping model and the corresponding interoperability level evaluation method for C4ISR systems are proposed to provide a specific method model for measuring the interoperability level of the C4ISR system.
Research on Fault Diagnosis Training System Based on Virtual Space Launch Site
Authors: Liu Yuan , Song Zuowei , Gao Peng , Liu Jian
Published: May 2020

Aiming at the problem that the ground equipment system of space launch range is complex and it is difficult to implement real fault diagnosis training, this paper analyses the requirements of fault diagnosis training, puts forward a design scheme of fault diagnosis system based on virtual range, and expounds the basic workflow of virtual fault diagnosis training system. The fault tree and expert system are combined to complete the fault diagnosis training process design. The real-time scheduling method of virtual scene based on multi-threaded entrance is used to load and render the virtual scene in real time according to the movement trend of the virtual avatar, which ensures the fluency of interoperability in terms of function and performance, so as to achieve the purpose of improving the training effect.
Unsupervised Spatial-Temporal Model Based on Region Alignment for Person Re-identification
Authors: Li Wei , Qi Meibin , Yang Ning , Zhou Guowu , Yang Yubing
Published: May 2020

Person re-identification(re-ID) refers to find a specific pedestrian across disjoint camera views. Recently, person re-ID rely on supervised learning to train network by labeled information. Resulting poor generalization in real-world environment because of the lack of pedestrian labels. At the same time, person images are easily affected by background, illumination and pose variations. And these factors make it difficult to extract discriminative features to distinguish different pedestrians. In order to resolve this research problem, we proposing an unsupervised learning alignment method called Region Alignment of Spatial-Temporal Fusion(RASTF) which joints global features with local aligned features to get more discriminative features. Local features are aligned by calculating the shortest distances between regions. Our proposed framework integrates a novel region alignment method in unsupervised network and the experiment results indicate that can outperform the state-of-the-art unsupervised methods.
Deep-Shallow Occlusion Parallelism Network for Person Re-Identification
Authors: Wang Qian , Qi Meibin , Jin Kaiyuan , Jiang Jianguo
Published: May 2020

In recent years, the progress of person re-identification has advanced significantly, but person in real scenes are often obscured by various objects. This problem has been ignored or solved based on an incomplete assumption by the previous person re-ID methods. This paper proposes a new training mechanism, Deep-Shallow Occlusion Parallelism network, which responds to multi-scale occlusion in a more universal case and alleviate the negative impact of occlusion effectively. Specifically, the proposed consists of shallow occlusion and deep occlusion, to which are applied with shielding simulation to enhance the difficulty of training samples. What’s more, channel-spatial attention is applied to various positions in each branch to concentrate on discriminative features afteqr occlusion. In the end, the weighted fusion of the two branches not only informs the network of the information of changes before and after occlusion, but also complements the deep and shallow information effectively. It makes the network more robust. This method has excellent performance on the three basic re-ID datasets and the largest partial re-ID dataset, with the state-of-the-art reached to or even surpassed.
Innovative Research on the Improvement of Visual Quality of Data Journalism in China: Visual Language and Interaction Design
Authors: Chen Zhirui , Guo Wenchen
Published: May 2020

As the last node of data journalism creation, visual design plays a crucial role in the transmission of data information. Exploring the routes to improve the quality of data journalism at the visual language and interaction design, this paper analyzes the works won data journalism awards and produced by well-known media from 2012 to 2019, and discusses the misunderstandings and shortcomings in the current data journalism visualization practice. This paper presents the improvement routes of data mapping, symbolic expression, interaction level, and interactive narration.
An Improved Multi-Level Set C-V Model for Grading of Korean Pine Seeds
Authors: Qiu Xunchao , Yuan Jianqing , Li Lei
Published: May 2020

An improved multi-level set C-V model for non-destructive grading of Korean pine seeds is presented in this paper. On the basis of improved Ostu and rough segmentation results of expansion operation, the improved C-V model is used to extract the target contour of Korean pine seeds; the characteristic parameters of fruit length and maximum transverse diameter are extracted by mathematical morphology method, and polynomial fitting is carried out with the actual measured values to construct a mathematical model with better quality; according to the extracted characteristic parameters, a comprehensive evaluation and grading standard for Korean pine seeds is established. The experimental results show that this method can achieve simultaneous classification of multiple Korean pine seeds, and the average accuracy of classification can be up to 97.2%.
Object Detection in Optical Remote Sensing Images Based on Residual Network
Authors: Li Da , Gong Shaoxing , Liu Dong
Published: May 2020

Conventional object detection algorithm based on deep learning only make use of deep feature which would become indiscriminative for small target in optical remote sensing images when the network deepens. In this paper, a multi-layer feature fusion method based on residual learning is proposed, which combine the shallow feature with deep feature to classify object comprehensively. First, a ResNet50 backbone network is constructed to extract feature from multiple layers. Then, the scales of feature at different layers are unified through RoI Pooling layer to screen region proposals and be classified through the SVM classifier. Comparative experiments are conducted on UCAS_AOD dataset released by UCAS and the result shows that our model achieved relatively good performance with 0.8802 and 0.9120 f1 score in car and airplane categories respectively.
Long-Wave Signal Detection Method Based on Limit Threshold Chaotic Oscillator
Authors: Zhang Yang , Rui Guo-sheng , Liu Yun-fei , Liu Lin-fang
Published: May 2020

The transmission of long-wave signal in lightning is easily weakened to a very low amplitude, and affected by non-stationary time-varying strong noise, which makes the detection signal become extremely difficult, and it is difficult to achieve the extraction of useful information. As the main noise source of interference long wave signal, this paper studies the chaos detection method of lightning noise, proposes the detection method of long wave signal based on the limit threshold chaotic oscillator, combines the Euler equation, the main frequency ratio phase change discrimination algorithm and other technologies, based on the non-linear signal processing technology, completes the chaos detection of long wave weak signal by simulating the noise environment in the laboratory, its reliability is verified by theoretical experiments, which can provide an important basis for the development of long-wave reception technology.
Research on the Intelligent Recognition System of Printing Roller Surface Defects Based on Machine Vision
Authors: Liang Chen , Hanxv Sun , Qingxuan Jia , Yanheng Zhang , Shaozhong Cao , Wei’ Zhao , Tao Yu
Published: May 2020

The printing machine’s sleeves installation operation is a typical peg-in-hole assembly problem. The printing machine’s sleeves are usually heavy, and the precision requirement of fit is high. Therefore it is hard to fit them together, and the assembly efficiency is low. What’s more the assembly tasks may make great damage to the worker who assembles it. To solve these problems, a Gough-Stewart parallel peg-in-hole assembly robot with high precision is designed. The robot has a stereoscopic laser measurement system to obtain position and speed information to realize closed-loop workspace control of the robot. The stereoscopic laser measurement system can also ease the impact in the assembly process. The robot has a passive flexibility wrist to solve the jamming question. The assembly parallel robot is designed. The kinematics model of the stereoscopic laser measurement system and the dynamic model of the Gough-Stewart parallel robot are built. A sliding mode controller is designed for the control of this robot and the parameters of the controller are optimized. The validity of the system dynamic model and stability of the sliding mode controller is proved by Matlab simulation results. Gough-Stewart Parallel Robot’s application range could be widen by the presented work.
Research on Diagnosis of Dermatology Based on Deep Residual Neural Network
Authors: Wang Jiayuan , Wang Weiye , Tian Tian
Published: May 2020

The methods of dermatological clinical examination are mainly skin images, including dermoscopy. Residual neural network (ResNet) can predict diseases according to dermoscopy images and provide effective proposals for doctors. Based on the ResNet model, this article migrated the pre-trained model on ImageNet to simulation experiment, and used the Focal Loss function to solve the problem of experimental sample imbalance, including but not limited to operations such as flip, rotation, scaling, and loss function replacement, thereby improving network performance. The experimental results show that the model trained by our method can reach completely correct when it classified a small number of samples. Our model can reach accuracy rate of 90.08%, recall rate of 88.44%, and F1 score of 85.25%. Compared with the model with unmodified loss function at the same depth, our model has respectively improved by 1.3%, 4.62%, and 3.58% in the above three aspects, which indicates that our method is effective in predicting rare diseases, and in predicting common diseases the accuracy rate also achieves good results.
Change Detection Based on Feature Optimization in High Resolution Optical Image
Authors: Pang Haiyan , Yang Xuezhi , Wang Jun , Dong Zhangyu
Published: May 2020

Object-oriented change detection (CD) method can make full use of feature information of high resolution optical images. However, the feature information is redundancy in Object-oriented CD of high resolution optical image due to the fact that the image has multiple bands. Therefore, feature optimization is necessary to object-oriented CD. Aiming at the problem, a novel CD method based on feature optimization which combines improved locally linear embedding (ILLE) algorithm and object-oriented technology is proposed. Firstly, two temporal images are inverted into objects using multi-scale segmentation algorithm. Secondly, the spectral and texture features of the objects are extracted to construct the novel feature change vector. Thirdly, the improved LLE algorithm, which introduces the Geodesic distance metric, is designed to optimize the feature change vector. Finally, the CD result is obtained by FCM algorithm. Experiments construct on the real GF-1 images, and the results confirm the effectiveness of the proposed method.
Research on Cache Strategy of Supporting D2D Communication Based on Recommendation Mechanism
Authors: Zhang Pingping , Pan Peisheng
Published: May 2020

In D2D wireless cache network, a good cache strategy is very important, but the current cache strategy has the problems of low cache hit rate and high base station cost. Aiming at this problem, this paper proposes a smart base station cache strategy based on recommendation mechanism. Through the Q-learning algorithm to learn user mobility and file popularity information, a base station cache strategy with the goal of minimizing long-term base station cost is obtained. How to formulate the base station cache strategy and set the recommendation mechanism under different user movement scenarios in the cellular network. The simulation results show that the lower the user’s mobility rate is, the smaller the optimal recommendation strength is. In the four user mobility scenarios in the simulation, the proposed cache strategy reduces the core network cost by up to 22.4% compared with the greedy cache, and it is reduced by up to 18.6% recommended strategy.
Research on Repeatability of Liquid Filling Mass Based on Weighing Method
Authors: Li Bin , Gou Yang , Chen Jie , Fan Xinghang , Cheng Shuo
Published: May 2020

The traditional dynamic flow controller has the problems of high conductivity, poor system stability and measurement accuracy. In this paper, the filling time of the liquid is controlled by the 0330 electromagnetic valve of Burkert company in Germany; the electronic balance is verified by the 100g weight of F2 grade of China Shuiling weight factory; the liquid mass after filling is measured by the bt4202s electronic balance of Sartorius company in Germany, and the repeatability of the experimental analysis of the liquid quality after filling is carried out. The experimental results show that the liquid filling mass of the device has high repeatability. It solves the problem of low repeatability of small flow liquid filling mass and has high application value.
Performance Evaluation of Key Performance of 5G Mobile Communication System And Development Countermeasures
Authors: Xiafeng Jiang , Xiaotao Xu , Junjie Li
Published: May 2020

This paper mainly studies the key performance of 5G mobile communication system and its development countermeasures. This paper introduces the challenges faced by 5G mobile communication system, which mainly come from increasing mobile data volume, connecting mass terminals anytime and anywhere, shortage of spectrum resources, and green environmental protection and energy efficiency; In order to study the key performance of 5G mobile communication system more comprehensively, first, this paper analyzes the practical significance of establishing the key performance indexes system of mobile communication system. Second, the performance requirements of mobile communication systems in six main application scenes are discussed. Third, the key performance indexes system of mobile communication system is constructed; This paper introduces the purpose and steps of performance evaluation of key performance of mobile communication system, and compares and evaluates the key performance of 5G and 4G in wide-area continuous coverage scene based on AHP. Suggestions on the development of 5G mobile communication system are put forward from four aspects: policy and system, demand and service, technology and talents, and sustainable development.
Study on T-Connection Transmission Line Fault Location Method Based on Transient Fault Traveling Wave Signal
Authors: Zhangzihao  , Yaoxiaodong
Published: May 2020

Aiming at the fault location of T-type transmission lines, which are susceptible to the influence of wave speed and transmission line length, this paper proposes a method of T-type transmission line fault location based on transient fault traveling wave information. Based on the fault reflection traveling wave generated at the fault point of the transmission line when a fault occurs, this paper detects the current and voltage traveling wave of the transmission line before and after the fault occurs through a current and voltage collector, and uses the non-stationary signal analysis to obtain the fault line The initial time of the wave reflection to the transmission line port is obtained by simplifying the formula to obtain the modal maximum value of the initial time of the transient fault traveling wave. The modal maximum value of the initial reflected traveling wave time is brought into the calculation formula of the fault branch location criterion. Finally determine the fault distance. Experimental results based on PSCAD show that the method has better accuracy and efficiency than traditional fault analysis methods.
Robust Secrecy Rate Optimizations for Healthy Monitoring System MISO Channel with D2D Communications
Authors: Jia Xuemeng , Pei Mingjun , Fu Rong , Jiao Zhanwei
Published: May 2020

In this paper, we study the robust secrecy rate optimization of multiple-input-single-output (MISO) security channels with multiple device-to-device (D2D) communication in an electronic physical system for health monitoring applications. We focus on the problems of robust power minimization and maximizing robust secrecy with transmit power in this system. Both of these robust optimizations are subject to probability-based secrecy and D2D transmission rates. The design of robust beamforming can consider combining statistical channel uncertainty model (CUM), but the problem of construction is a non-convexity problem that is not easy to solve, so we propose two methods to solve this problem: based on Bernstein-type inequality and a conservative approximation of S-Procedure. The simulation results demonstrate that the performance of the S-Procedure method on the reachable confidentiality rate is not as good as the method based on the Bernstein-type inequality.
Technological aspects of thin film formation on the rotor of spherical gyroscopes
Authors: Tit M.A. , Scherbak A.G.
Published: May 2020

A scheme of fixation in a technological device during thin film deposition process is considered for the spherical rotor of electrostatic and cryogenic gyroscopes. Calculations of the fixing scheme parameters, based on the contrast image zone location are presented. The influence of the fixing scheme on the rotor imbalance is evaluated. The dependence of the difference between the initial and post-deposition imbalance on rotor and thin film parameters is obtained. Comparison of the dependencies obtained for electrostatic and cryogenic gyroscope rotor is shown.
A comparative study unraveling the effects of TNF-α stimulation on endothelial cells between 2D and 3D culture
Authors: Wang Bo , Chen Ruomeng , Gao Hongqian , Lv Xiaohan , Chen Lifang , Wang Weirong , Liu Yaxiong , Zheng Nanbo , Lin Rong
Published: May 2020

Endothelial cell (EC) dysfunction is an important predictor of and contributor to the pathobiology of cardiovascular diseases. However, most in vitro studies are performed using monolayer cultures of ECs on 2D tissue polystyrene plates (TCPs), which cannot reflect the physiological characteristics of cells in vivo. Here, we used 2D TCPs and a 3D culture model to investigate the effects of dimensionality and cardiovascular risk factors in regulating endothelial dysfunction. Cell morphology, oxidative stress, inflammatory cytokines and endothelial function were investigated in human umbilical vein endothelial cells (HUVECs) cultured in 2D/3D. The differentially expressed genes in 2D/3D-cultured HUVECs were analysed using Enrichr, Cytoscape and STRING services. Finally, we validated the proteins of interest and conﬁrmed their relevance to TNF-α and the culture microenvironment. Compared with 2D TCPs, 3D culture increased TNF-α-stimulated oxidative stress and the inflammatory response and changed the mediators secreted by ECs. In addition, the functional characteristics, important pathways and key proteins were determined by bioinformatics analysis. Furthermore, we found that some key proteins, notably ACE, CD40, Sirt1 and Sirt6, represent a critical link between endothelial dysfunction and dimensionality, and these proteins were screened by bioinformatics analysis and verified by western blotting. Our observations provide insight into the interdependence between endothelial dysfunction and the complex microenvironment, which enhances our understanding of endothelial biology or provides a therapeutic strategy for cardiovascular-related diseases.
Using six vegetation indices based on observational data from remote sensing satellite to estimate effect of rice-cotton rotation on rice yield
Authors: Sun L , Zhu Z S
Published: May 2020

This paper was aimed to examine the differences in main vegetation indices when dealing with the yield of rotated rice for the rice in a rotation with cotton. The rice vegetation indices for continuous rice system and rice-cotton rotation system were computed with the observational data from remote sensing satellite images. The observational data deals with studies whose aim is to elucidate cause and effect relationships between the rice-cotton rotation and the rice yield. The analysis of rice vegetation indices all shown that rice yield increased following rotation with cotton compared to continuous rice. The principal factors to be considered in reaching such a conclusion are the quality of remote sensing image, the method of random sampling, the formula for representation of vegetation indices and the size of differences in vegetation indices.
Survey and analysis on the satisfaction of commercial consumption in Kuan & Zhai Alley
Authors: Du Y D , Huang P , Ma B B , Cheng F Y , Leng Y T , Li H Y
Published: May 2020

Since the ministry of commerce held the national mobilization meeting on the construction of high-grade pedestrian streets in 2018 and started the construction of high-grade pedestrian streets, various parts of the country have actively carried out the construction of highgrade pedestrian streets, with the focus on cultivating a number of pedestrian streets with national influence. As a window of chengdu culture, wide and narrow alley covers a variety of business and travel formats. In this study, likert attitude scale was adopted to conduct field investigation and visit on consumers' satisfaction with the supply of business forms in wide and narrow alley scenic spots, and data analysis was made on the phenomenon of big income difference and low average consumption level among different business forms in scenic spots. In view of the problems existing in the scenic spot, such as small capacity, low consumption level and unbalanced distribution of business, the corresponding countermeasures are put forwarded.
Experimental study on allergic and skin irritation of Guci Powder in Rabbits
Authors: Wang H M , Yao D S , Ma J J , Xu M Y , Lu W X , Ma Z Z , Zhang Z C
Published: May 2020

The study is to observe the irritation and anaphylaxis of Guci Powder on the skin of rabbits. Methods: the irritation of rabbit skin was observed by single dose of broken skin, and the irritability was observed by repeated local administration. A single dose of the drug on the back of the rabbit did not produce any irritation to the intact skin of the animal and no irritation to the damaged skin, nor did repeated local administration produce anaphylaxis. There was no irritation and anaphylaxis in rabbit skin.
Modeling of biotic cycle formation in closed ecological systems
Authors: Brilkov A V , Loginov Y Y , Babkin A V
Published: May 2020

The biotic turnover formation in closed ecological system (CES) is analyzed by means of mathematical and computer modeling. The model CES hierarchical structure formation is ruled by the energy flow through the ecosystem which increases after the introduction of a predator in the steady state of “production - reduction” systems. The model analysis shows that the presence of the primary predator under certain conditions leads to the acceleration of the biotic turnover because of its higher mineralization ability (in comparison with the same of decomposer). The most acceptable predator which is able to bring the system towards the higher biotic turnover rate and energy consumption can be found for each system.
Improvement of environmental efficiency of plants of green zones by creation of subordinate crops of Siberian stone pine
Authors: Kolosovskij Eh V , Matveeva R N , Butorova O F , Bratilova N P , Shcherba Yu E , Pastuhova A M
Published: May 2020

It is topical to increase the ecological efficiency of plantings of green zones of settlements by creating Siberian stone pine crops. The subordinate crops of this type, which were created in 1966 by quadrennial seedlings of different geographical origin at thick planting, were observed (9 pieces in a site measuring 0.7 x 0.7 m, the distance between the centers of the sites is 4 m). It was found that the canopy closure of the stand, consisting of birch and pine, has a significant effect on the growth rates of subordinate crops of Siberian stone pine. So at canopy closure 0,1-0,1 52 years old crops, despite the different geographical origin, had the highest rate of height, stem diameter, crown, number and diameter of lateral branches on the lower live node in comparison with the closure of 0.6-1.0 Average increment of branchlets at 32 year period was by 49,8% more in trees, growing at a canopy closure of 0,2 against 0,7-0,8. Trees growing on the open area characterized by early seeding, were selected and propagated by engrafting.
From «Black sky mode» to ecologizing thought
Authors: Piskorskaya S Y , Kureshov V A
Published: May 2020

The article introduces the environmental situation in Krasnoyarsky krai, it discovers the problem of “black sky mode”, and indicates how to solve the problem adequately using additional landscaping and ecologizing people’s thought. The research demonstrates the methodologies to form environmental thought and behavior. The article represents the social practices developed by Reshetnev Siberian State University of Science and Technologiesto reduce the air pollution.
Influence of sweep on the efficiency of sawing
Authors: Ogurtsov V V , Derevyannykh D N , Kargina E V , Matveyeva I S
Published: May 2020

The influence of the sweep of logs on the volume yield of sawn timber and the profitability of its production has been investigated by the method of simulation modeling. It is established that when the average sweep varies from 0 to 0.25%, the volume yield is reduced by 1.2 … 2.9%, the profitability is reduced by 2.7 … 5.8%. The contribution of the sweep of logs to the deviation of the real volume yield of sawn timber from its calculated value can reach 70 … 80%.
Dependence of saw timber volume output and production efficiency on logs ellipticity
Authors: Ogurtsov V V , Dereviannykh D N , Kargina E V , Matveeva I S
Published: May 2020

We investigated the effect of the log ellipticity on the volume output of timber and production efficiency by means of simulation. The degree of ellipticity influence on the forecasting of timber production economic indicators accuracy is shown. We have found out that when the average ellipticity from 0 to 6 mm, so the volumetric output is reduced by about 1 %, and profitability decreases by 0.8…2.3 %.
On some group properties of the functional presentation of information
Authors: Kukartsev Anatolii M , Kuznetsov Alexander A , Kuklina Anna I
Published: May 2020

The paper provides an overview of research results on processing the information represented as Boolean functions. Actions of the hyperoctahedral group (or the Jevons group) are set on these functions. Information objects transformed by such actions have special frequency (entropy) characteristics. Such actions can be used to generate information messages with equal frequency and / or entropy characteristics. Preservation of the frequency characteristics of informational messages also allows us to solve one of the problems of classifying Boolean functions with respect to the Jevons group action. This problem has existed since the Harvard catalog was created and it has not been solved until the results of the studies covered in the paper were applied. Additionally, the possibilities of optimizing the calculation of actions tens and hundreds of times due to the properties of the elements of the Jevons group and modern processors are highlighted. This optimization allows the construction of information processing algorithms using the Jevons transformations for real data (commensurate with 1 MiB).
Structural diagram of mass transfer in larch wood during convective drying
Authors: Zaripov Sh G , Chizhov A P , Klevitova Zh N
Published: May 2020

The article provides a substantiation of the structural diagram of the moisture removal mechanism, which is similar to baromembrane process,from larch sawnwood during convective drying. The concept proposed is based on such provisions as the presence of a semipermeable membranes system in larch wood and the chemical activity of larch wood, which leads to the formation of a gas-vapor mixture in volumes many times exceeding the volume of the sample itself. As a result, mass transfer of an aqueous solution of extractive substances from the center of the board to the surface is observed. The passage of an aqueous solution of extractives through a system of semi-permeable membranes leads to the separation of the solution into concentrate and permeate. The change in the physical state of permeate leads to the formation of the layer that greatly reduces the intensity of the moisture removal from the wood. Then the entire duration of drying should be considered as the sum of two clearly marked periods - intensive and slow. The aim of the work is to substantiate the structural diagram of mass transfer in larch wood during convective drying.
Low-temperature phase transition in bismuth ferrite films substituted by manganese
Authors: Aplesnin S S , Masyugin A N , Rybina U I , Tarasenko T N. , Yanushkevich K I
Published: May 2020

Measurements of the capacitance and tangent of dielectric loss angle, impedance and resistance, magnetization in a magnetic field of 8.6 kOe BiMnxFe1-xO3 films in the temperature range 80-600 K were carried out. The anomalies of the dielectric properties are explained in the Debye model and correlate with changes in the magnetic moment versus temperature.
The study of the light section canal anodic-abrasive polishing mechanism
Authors: Trifanov V I , Melkozerov M G , Sukhanova O A , Trifanov I V , Mednikov D M
Published: May 2020

The development of electronic technology, waveguide transmission lines of electromagnetic energy, as well as precision engineering require the development of polishing technologies. One of these technologies is the method of anodic abrasive polishing (AAP). The causal diagram of the influence of technological parameters on the output characteristics of AAP is presented, as well as the model of the process and the analysis of the mechanism of anodic abrasive polishing at the longitudinal vibration contact with the treated surface and the impact of the pulse current density used for electrochemical polishing of micro-irregularities with the help of a cathode integrated with an elastic abrasive tool
Disc friction to specify power balance of a turbopump unit of LPE
Authors: Zuev A A , Nazarov V P , Zhuikov D A , Tolstopyatov M I , Savelyeva M V
Published: May 2020

The research elaborates the main characteristics of the liquid propellant engines; it determines that some turbopump units have got the frequency of rotor spinning up to 100 000 and even 120 000 r.p.m. The authors analyse the current methodologies to specify losses connected with disc friction. The methodologies determining disc friction coefficient often obtain criterion-empirical character, and due to increasing a number of rotor spinning of turbopump unit of the liquid propellant engines, they reflect the specification reliability inaccurately. The research demonstrates equations to determine disk friction coefficients based on considering the theory of three-dimensional boundary layer to a rotational flow taking into account the turbulent process of velocity distribution. The authors give recommendations on determining an index of velocity distribution degree depending on Reynolds rotation criterion of a disc and plug flow.
Magnetocapacity of manganese sulphides substituted by thulium ions
Authors: Kharkov A M , Sitnikov M N , Kretinin V V , Fisenko O B , Fillipson G Yu
Published: May 2020

The capacity and the dielectric loss tangent of a TmxMn1-xS (x=0.05, x=0.1) solid solution in the frequency range (1–300) kHz without field H=0 and in a magnetic field of H=8 kOe in the temperature range (80–500) K were measured. The increase of dielectric permittivity and the maximum of dielectric losses at high temperatures were found. The shift of the maximum of the imaginary part of the permittivity towards high temperatures with increasing concentration is found. The magnetocapacitance effect for two compositions and change the sign of magnetocapacity with increasing concentration were revealed. The magnetocapacity is explained in terms of the model with orbital electron ordering.
Factor analysis of inelastic electron scattering cross section spectra of Si, Fe and iron silicides FeSi2, Fe5Si3
Authors: Igumenov A Yu , Parshin A S , Mikhlin Yu L , Andryushchenko T A , Kanzychakova V O
Published: May 2020

The inelastic electron scattering cross-section spectra of Si, Fe and iron silicides FeSi2, Fe5Si3 were calculated from the experimental reflected electron energy loss spectra as the product of the average inelastic mean free path and the differential cross section of the inelastic electron scattering. The inelastic electron scattering cross-section spectra were studied using factor analysis. This method allowed us to quantitatively separate the surface and volume contributions to the spectra, and determine the energy of the bulk plasmon more accurately than it is possible using traditional methods.