bluuebunny/crossref_metadata_2025_split huggingface dataset:
Coding Style of C Program from the Perspective of Software Engineering
Authors: Yu Jiujiu , Zhang Jishan , Wu Ning , Zheng Chun , Zhang Deqing 
Published: August 2019

Abstract
Coding style is an important factor in measuring the program quality. The paper explores on the C program coding style of the program annotation writing, data declaration, program statement writing, and input/output design style from the perspective of software engineering. Good coding style plays an important role in improving the readability, testability and maintainability of the program.
Visual Loop Closure Detection Based on Stacked Convolutional and Autoencoder Neural Networks
Authors: Wang Fei , Ruan Xiaogang , Huang Jing 
Published: August 2019

Abstract
Simultaneous localization and mapping is the basis for solving the problem of robotic autonomous movement. Loop closure detection is vital for visual simultaneous localization and mapping. Correct detection of closed loops can effectively reduce the accumulation error of the robot poses, which plays an important role in building a globally consistent environment map. Traditional loop closure detection adopts the method of extracting handcrafted image features, which are sensitive to dynamic environments and are poor in robustness. In this paper, a method called stacked convolutional and autoencoder neural networks is proposed to automatically extract image features and perform dimensionality reduction processing. These features have multiple invariances in image transformation. Therefore, this method is robust to environmental changes. Experiments on public datasets show that the proposed method is superior to traditional methods in terms of accuracy, recall, and average accuracy, thereby validating the effectiveness of the proposed method.
Fault value analysis of on board ATP system using big data
Authors: Tao Shen , Hongliang Geng 
Published: August 2019

AbstractRFM module is widely used for the classification of customer value. The classification results based on big data are often used as portrait of customer loyalty and customer value evaluation. In this paper, RFM model is introduced innovatively to analyse the fault of on board ATP (Automatic Train Protection) system. Through the fault value classification, it can effectively predict the impact of a certain type of fault on operation. For one thing, the operation departments and equipment providers can pre-process the corresponding failures according to the evaluation results, so as to reduce operational losses. For another thing, it can be used as the basis for dealing with big data of ATP faults.
Research and Application of Big Data in E-government
Authors: Naili Liu , Lei Ma 
Published: August 2019

Abstract
The wide use of modern electronic information technology, represented by big data technology, has brought people into the era of big data. Big data is affecting our work, life, even economy and the development of the society. Nowadays, the application of big data technology in e-government speeds up the development of e-government, which is important for the overall construction of e-government. This paper summarizes the application of the big data, introduces the application of big data technology in e-government. Then this paper analyzes the current situation and problems of e-government development. Finally this paper proposes the solutions of big data platform in e-government.
Intelligent Routing Scheme for SDN Satellite Network Based on Neural Network
Authors: Sun Weichao , Liang Jun , Xiao Nan , Ding Ran , Zhang Zhenhao 
Published: August 2019

Abstract
In view of the existing SDN-based satellite network system, the tri-state content-addressable memory (TCAM) space occupied by the flow table is increasing, and the search and matching of flow entries are complicated, resulting in reduced routing and forwarding efficiency, which cannot meet the needs of diverse application requirements. Therefore, an intelligent routing scheme of SDN satellite network based on neural network (IRSSN) is proposed. The controller acquires the transmission mode of the data stream by training the neural network (NN), and replaces the flow table with the trained NN. An intelligent routing mechanism based on the orthogonal polynomial (Chebyshev) neural network is proposed. The switch predicts its forwarding path according to the traffic type of the data stream to meet the QoS requirements of the satellite network application. The simulation results show that IRSSN significantly reduces the occupied TCAM space and improves routing efficiency.
Optimization of DTC algorithm based on distributed parameter modelling of PMSM
Authors: Shi Bufan 
Published: August 2019

Abstract
Accurate mathematical model is the basis and precondition of electric motor control. The existing motor model under concentrated parameters is difficult to describe the harmonic and nonlinear characteristics of the motor, while the motor model under distributed parameters can accurately describe the torque and flux characteristics of the motor precisely at all working points, which provides the foundation for model-based motor control. The stator flux and torque observer have an essential influence on the performance of direct torque control (DTC) for PMSM. The concentrated parameter model of PMSM considering only the fundamental wave vector of the magnetic field for DTC will have obvious deficiencies in the performance such as torque ripple. This paper therefore uses the reconstructed magnetic co-energy (MCE) model to establish a torque and flux observer based on distributed parameters, which is introduced into the DTC algorithm of PMSM as an observer. The optimized DTC algorithm makes full use of the flux and torque harmonic description capabilities of the distributed parameter model, which improves control performance. The superiority of the distributed parameter observer is verified by simulation and bench test.
Electromechanical-Electromagnetic Hybrid Simulation Based on E-Tran Plus
Authors: Cui Yong , He Xiang-xiang , Yang Xiu , Wang Wei-hong , Cao Liang , Jin Ming-jie 
Published: August 2019

Abstract
The simulation software E-Tran Plus is used as the interface, and the mature software PSCAD and PSS/E are combined to form the electromechanical-electromagnetic hybrid simulation platform. The function and principle of the simulation software are introduced in detail, and a simple electromechanical-electromagnetic hybrid simulation and pure electromagnetic simulation research are compared through a small system. The theoretical and simulation results show that the electromechanical-electromagnetic hybrid simulation using the new software has higher accuracy. The hybrid simulation model based on E-Tran Plus can better reflect the dynamic characteristics of the AC system, and it is closer to the actual project, which provides an important reference value for the research of electromechanical-electromagnetic hybrid simulation of large-scale AC/DC grid.
The influence of aggregate gradation on the fresh and hardened concrete properties
Authors: Figmig R , Kovac M 
Published: August 2019

Abstract
This experimental study is focused on the aggregate gradation impact on the properties of fresh and hardened concrete. For the experiment, 9 mix design were prepared with the constant content of cement, effective water, plasticizer and aggregate. The variable factor is represented by different proportions of 4 fraction (0/0.7, 0/4, 4/8, 8/16). Consistency by slump and flow table in time, compressive strength, water absorption and density were measured. Some significant differences were observed. Consistency by the slump test varied from 0 to 170 mm after 5 minutes and from 0 to 50 mm after 30 minutes of concrete mixing. Consistency by flow table varied from 340 to 530 mm after 5 minutes and 320 to 460 mm after 30 minutes. Standard compressive strength varied from 50.8 to 61.6 MPa. Water absorption varied between 4.7 and 5.9 mass % and density from 2380 to 2440 kg.m−3.
Hydraulic assessment of flood protection measures proposal
Authors: Janík A 
Published: August 2019

Abstract
Ensuring flood protection is a never-ending task, therefore there is always something to improve or add. Nowadays there is a big boom in detention reservoir projecting for smaller river basins in Slovakia. This paper focuses on flood protection proposal for village Vel’ká Lúka located in the central part of Slovakia. The contribution deals with the hydraulic modelling of present state of river Lukavica channel and its capacity and also proposed flood protection measures. According to geodetic survey and flow rate measurements a 5 km long partially calibrated mathematical model of the Lukavica River has been created. For this purpose, the HEC-RAS software has been used. After evaluation of the flow rate capacity through the village, a flood protection measure – detention reservoir – has been proposed using designed flood wave provided by Slovak Hydro-meteorological Institute (SHMI). According to transformation of flood wave computation, specific parameters of necessary flood protection measures were determined.
Water transport in materials of historical buildings
Authors: Jaroš P , Vertal’ M 
Published: August 2019

Abstract
The historic buildings renovation is one of the unwritten obligations of every nation. In the territory of the Slovak Republic there is quantity of the historical buildings which are from different architectural periods, which we can find not only in the squares of the bigger cities, but also in a wide areas. The technical conditions of these buildings describe our relationship with which we look at them. At the present, many historic buildings are restored, but more are left untouched and without maintenance. Incorrect construction details, but also inappropriate additional building adaptation, cause degradation of the masonry and surface layers. Absence of the water-insulating waterproofing against capillarity allows the water to be transported into vertical structures and with it transport water-soluble salts from the subsoil. Increasing mass of the humidity by capillary transport and crystallization of water-soluble salts in porous materials causes visible defects on the surface of the structures. Laboratory measurement of the humidity and capacity of the water-soluble salts in a historic building point to the impact of the segmentation and using of the building. Different values of the taken samples define critical places that necessitate additional remediation. Suggestion of the remediation influences diversity of the materials which are used and their material characteristics. For the water transport analysis, it is necessary to know the transmission parameters of the water of the historical structures. Determination of the humidity coefficient is possible by the water absorption coefficient and the value of the capillary humidity. The measurement is carried out by an experiment of the unidirectional capillarity by the laboratory instrument.
The search for an optimal architectural shape using wind performance analysis
Authors: Kabošová L 
Published: August 2019

Abstract
The rapid enhancement of computers’ power and the boom of open-source software development have offered a broad range of possible applications in architectural design. Grasshopper is a visual programming language developed for the 3D CAD modeling program, Rhinoceros. Utilizing Grasshopper’s free software extensions, it is possible, among other things to evaluate the environmental performance of architecture in the early conceptual stage. This paper introduces a novel approach to architectural designing presented in a case study in the extreme environment of Reykjavik’s airport. The shape of the airport building formed within this case study can be parametrically changed, and the performance of the various shape modifications in the wind can be tested. Using Ladybug and Swift for Grasshopper, the wind situation at the airport is analyzed, and the aerodynamic shape of the proposed airport building is evaluated in the prevailing easterly winds. The proposed bio-climatic architectural design approach incorporates the surrounding micro-climatic conditions, wind in particular, as a driving factor already in the phase of first design ideas. The parametrically developed airport is formed with regard to the pedestrian wind comfort, as well as airport traffic safety.
Study of zinc removal from water solutions using hornbeam wooden sawdust
Authors: Kovacova Z 
Published: August 2019

Abstract
The polluted water from an industry, in particular with heavy metals, aromatic molecules and dyes, is a serious environmental problem because their potential environment toxicity. Therefore, there is a need to develop methods that can remove toxic contaminates from wastewaters. The sorption process is one of the most popular methods for the environment treatment. Adsorption on low-cost materials is studying with great interest by researchers in last years. Hornbeam sawdust is a natural resource and an inexpensive material which can be used for water treatment. In this study, the hornbeam sawdust was used as for the removal of zinc from an aqueous solution. Fourier transform infrared spectroscopy (FTIR) was used to determine functional groups of sawdust. The pH decreased from 6.3 to 5.8 during 2 h and in case of 24-hours experiment on the value of 5.4. Hornbeam sawdust had efficiency of zinc removal from aquatic model solutions height than 75 % which means that there is significant potential for sawdust as a sorbent material for heavy metals removal from water.
Fracture response of cement-based composite with spherical glass aggregate exposed to high temperatures
Authors: Rozsypalová I , Kumpová I , Majda T , Keršner Z , Štancl P 
Published: August 2019

Abstract
This paper concerns an investigation into the effects of high temperatures acting on specimens made from specially designed fine-grained cement-based composite with spherical glass aggregate. The experimental programme was carried out on four sets of beam specimens with the dimensions 20 × 40 × 200 mm. The specimens were thermally loaded to pre-set temperatures of 100, 200 and 400 °C, after which these temperatures were maintained for 60 minutes (one of the sets contained three reference specimens which were placed in a laboratory at a temperature of 20 °C and were not exposed to heat). After the temperature loading had been performed, the specimens were left to cool down to ambient temperature. After that, fracture tests were used to determine the degree of damage caused to the specimens by temperature loading. Three-point bending tests were conducted on the previously loaded beam specimens, which were notched to provide them with an initial stress concentrator using a diamond blade saw before testing. The depth of the initial edge notch on the bottom side of the specimen was approximately 1/3 of the total specimen depth. The span length was 180 mm. Fracture response was evaluated via load versus deflection diagrams. The monitored parameters were modulus of elasticity, effective fracture toughness and specific fracture energy. Informative compressive strength values were also determined. Selected specimens were investigated using X-ray micro-tomography (micro-CT).
Cost management of building constructions and works through knowledge-based database
Authors: Smetanková J , Mandičák T 
Published: August 2019

Abstract
Civil engineering represents an important economical segment. Higher pressure on raising effectiveness, productivity and automation is perceived in society. An important factor that influence raise of effectiveness and productivity is cooperation support between participants of building sector. Individual participants are connected between each other and they are allowed to gain, collect, share, rate and use available information’s in required quality and required time. For this purpose, a lot of supporting tools are created and these dispose with automation features, such as knowledge system or knowledge database. One of the most important processes in building’s life-cycle is cost setting through the whole life-cycle. Correct cost setting is an important indicator in deciding about size, shape, equipment and also on building realization itself. In building’s life-cycle, besides economical aspect that is represented by costs connected with individual life-cycle phases, it’s also important to consider other parameters that greatly influence building method and using or disposal of the building. This article, based on mentioned facts, brings a proposal of methods and structure to create knowledge database, that brings user a tool that dispose with information’s needed for deciding about construction solution of future building and allows to manage costs for building operations and building works.
Analysis of current situation in field of LCA.
Authors: Tomková Ž , Vilčeková S 
Published: August 2019

Abstract
With building industry and buildings large consumption of energy and environmental impact on planet, it is crucial to minimalize future consequences of our decisions. With help of LCA analysis, we can evaluate current situation and predict future impact of the design. This allows us to make better decisions in design stage of building process. There needs to be a lot of analysis to relevantly compare different types of buildings, in different environment and using different materials. This paper concentrates on current situation in this field of study, in global scale and with focus on Slovak republic.
Humidity and salt sensor based on CdSSe nanowire chip
Authors: Lu Tianqi , Zhang Min , Guo Shuai , Liu Ruibin 
Published: August 2019

AbstractThe humidity and salt sensitive characteristics of sensor based on polyimide coated CdS1-xSexsemiconductor alloy nanowire chip have been investigated. The composition-graded CdS1-xSexnanowire chip with large size shows excellent photo-sensitivity and stress sensitivity, synthesized by a simple CVD method and its composition can be gradually tuned from CdSe to CdS. The conductivity of the sensor showed good humidity response characteristics with a maximum responsivity (dI / I) of 85% at 80% RH. In addition, the current decreases linearly with increasing salt concentration, indicating that the chip sensor has good salt responsiveness and the best salt responsiveness is 80%. The RH dependent resistance upon illumination exhibits good linearity (R2=0.9948) to guarantee the high prediction accuracy. In addition to good moisture and salt response characteristics, the sensor also exhibits excellent stability and reproducibility.
An Improved Algorithm for TDOA Trajectory Tracking
Authors: Beibei Li , Zhanjun Hao , Xiaochao Dang 
Published: August 2019

Abstract
In a precision positioning system, one important source of positioning error is the clock synchronization problem, which is caused by multiple base stations. Therefore, eliminating the clock synchronization problem in a no-line-of-sight (NLOS) environment plays an important role in reducing errors in a positioning system. To address this problem, this study designs a practical experimental environment and proposes the concepts of Time Difference of Arrival (TDOA) and non-line-of-sight-Time Difference of Arrival (N-TDOA). First, the improved TDOA algorithm is used to determine the tag’s position; second, the tag’s trajectory is drawn at different times; then, a map of the monitored area is loaded, and the tag trajectory is displayed in the actual experimental environment. The experimental results show that the N-TDOA algorithm synchronizes the base stations at the algorithmic layer; thus, deploying network cables or wires to achieve clock synchronization is unnecessary: wireless deployment can be used. In an NLOS environment, the N-TDOA method significantly improves the positioning accuracy compared with that of other algorithms, which facilitates further trajectory tracking research. Overall, the proposed approach improves both the accuracy and stability of trajectory tracking.
Shielding effectiveness analysis of a rectangular enclosure with wire mesh covering
Authors: Chen Longlong , He Ri , Jiao Chongqing , Hu Yifan 
Published: August 2019

Abstract
Analytical model has been developed for the shielding effectiveness of a rectangular enclosure with wire mesh covering. The aperture covered by wire mesh is replaced by an equivalent impedance which contains the surface resistance of the wire mesh. Based on the transmission line theory, the enclosure is modelled as a length of rectangular waveguide ended with a short circuit, then the shielding effectiveness (SE) of the enclosure can be calculated. By comparing the calculation with the full-wave simulation software, the proposed method is validated.
The design and Implementation of Image Transmission System for Mobile Devices Stabilizers
Authors: Wu Lingyu , Song Shuxiang , Song Wenwen , Huang Jinyan , Xia Haiying 
Published: August 2019

Abstract
In view of the application of PTZ system in photographic equipment, we design a wireless image transmission system for photographic equipment and mobile equipment. Hi3516A is the main control chip of the system, and the second connection interface is connected with the photographic equipment to collect the relevant data that recorded by the photographic equipment, and the data is encoded and encapsulated by the processing module. The first connection interface adopts 2.4G wireless radio transceiver module, which connects with the mobile device wirelessly to transmit picture data information to the mobile device, and realizes wireless image transmission from the photographic device to the mobile device. The test of wireless picture transmission system shows that the picture transmission system has fast transmission rate, high real-time performance and wide application range.
Research on Product Safety Assessment Method Based on Spacecraft Assembly Process
Authors: Liu Zhibin , Li Zhiming , Lu Yi , Wang Yu 
Published: August 2019

Abstract
Based on the analysis and identification of risk factors in spacecraft assembly process, the safety evaluation model of spacecraft assembly process is constructed. Form a multi-dimensional safety evaluation parameter system. After investigating the safety evaluation methods in related fields, the method of combining the analytic hierarchy process (AHP) with the fuzzy evaluation method is determined to carry out the evaluation work, and the comprehensive safety evaluation results are obtained. The result of the evaluation is accurate and objective, which lays a solid foundation for the safety evaluation of spacecraft assembly process products.
Design of B2B E-commerce Platform Based on SOA Architecture
Authors: Li Jiang 
Published: August 2019

Abstract
With the rapid development of information technology and computer networks, internnet-based e-commerce has also emerged, and has achieved tremendous development in recent years. Most enterprise systems are developed based on heterogeneous platforms and different information standards. The interaction and integration between enterprises is very difficult, and the traditional distributed architecture can not solve the current needs. Service-oriented architecture is a new generation of distributed software architecture that solves the above problems. As a new generation of distributed software architecture, it not only improves the reusability of software, but also achieves good scalability. This paper uses the SOA architecture to design the e-commerce platform, and designs the interface service to realize the service composition of the e-commerce platform.