bluuebunny/crossref_metadata_2025 huggingface dataset:
Application and Implementation of Steinmetz Solid
Authors: Zhang Lintong , Chu Jixun , Li Na
Published: November 2019

This article will start from how to calculate the volume of Steinmetz Solid by double integration, and expand to formation, cross section and unfolding of it by Matlab in a brand new way, in order to explore the internal structure and application. Further, we expand to polygonal Steinmetz Solid by Matlab to acquire more comprehensive understanding and mastery of it.
Design of a New Generation Terminal Platform for Radio Film and Television NGB
Authors: Li Peifeng
Published: November 2019

The Next Generation Broadcasting Network (NGB) is not only a revolution in radio and television technology, but also an overall innovation in concept and technology. With its emergence, radio and television will achieve full service and high quality in the future carrier network, and it can also realize the convergence of radio and television networks under different technical systems. This paper described that Xuzhou Radio and Television Company has seized the opportunity of the next generation radio and television network NGB construction in the whole country, to blaze new trails and innovates, and continuously designed a new generation terminal platform according to its own actual characteristics.
A Discussion on the Service System of College Smart Libraries in the “Internet +” Age
Authors: Zhang Yuping
Published: November 2019

Since the State Council proposed the “Internet +” action plan in 2015, various industries have been developing their “Internet +” action plans. “Internet +” has already begun to affect the library community: In terms of service method, library services need to be transformed from online model to offline model and from manual services to smart self-service ways for users; in terms of service accuracy, libraries should solve the following problems: how to be as accurate as possible to meet the needs of users, how to exactly position the library services and products, and how to build an effective service platform. This requires the library to re-explore the new service system in the “Internet +” environment. Based on the author’s learning and practical experience, this article first analyzed the connotation and characteristics of “Internet +” and then discussed the reform of library services led by “Internet +”. Then it discussed the smart service system of college libraries and finally built a smart service system of college libraries based on “Internet +”
Analysis of artificial Intelligence Technology in Electric Automation Control
Authors: Zhang Hongzhe
Published: November 2019

Electrical engineering is an important part of mechanical engineering. With the development of science and technology, automation has gradually replaced the artificial labor force, and artificial intelligence has played an important role in electrical engineering automation. Artificial intelligence is embodied in the three levels of thinking, perception and behavior. It mainly simulates eyes and expands human intelligence. Its research contents can be divided into machine thinking and thinking machine, machine behavior and behavior machine, machine perception and perception machine, three levels. In the control process of electrical automation engineering, intelligent control technology not only strengthens the ability of automation and control of electrical equipment, but also lays a solid foundation in the fast and safe operation process.
Optimization of education management system for English teaching based on web
Authors: Song Guoping , Sun Wenxing
Published: November 2019

With the integration of world economy, social reform and the development of English education. The English test has become a significant part of education. Due to the status of English courses and the scale of examinations, computer examination is undoubtedly a convenient and fast way of examination. At the same time, for higher vocational college teaching, some English examination systems based on WCB are not targeted. Therefore, the development of higher vocational English Web examination system. It is an exploration of English teaching reform and English language learning test in higher vocational colleges under the new situation. It has the characteristics of pertinence, science, economy, practicability and operability. It is believed to be of great promotion and application value to higher vocational English teaching, curriculum construction and reform as well as teachers’ own development.
Research and system design and implementation of log - based computer forensics technology
Authors: Wen Linbin
Published: November 2019

This thesis is in the “large scale research of Internet information security system” of the background, studied the computer log network forensics technology, focuses on the log forensics analysis and integrity protection and authentication technology, designed and implemented based on computer network system log user behavior forensic analysis system. This paper summarizes the relevant concepts of computer forensics technology, electronic evidence and system log, demonstrates the feasibility of log as electronic evidence, and proposes the realization model of computer network forensics based on system log, and analyzes the problems that should be paid attention to in computer log forensics. This paper studies the key issues in the process of log forensics, including the collection, transmission, preservation, analysis and submission of logs, in which the analysis of log forensics and integrity protection and verification are the focus of the research. Forensic analysis of logs is to mine log records related to intrusion events by analyzing massive log data, which is divided into statistical analysis and correlation analysis. Paper presents the overall structure of the system is designed, and the subsystem module function and working process of description, implements a user behavior based on log computer network forensics analysis system, and from the safety of the system, the log acquisition performance, the integrity of the data transmission performance, the log data, forensic analysis and so on five aspects of the performance of the system were tested and analyzed, the analysis results show that the system has the basic function of the network forensics.
Bicycle Intelligent Stereo Parking Garage
Authors: Wang Muyao , Ma Shaochun , Kong ruosi , yuhang LIU
Published: November 2019

With the saturation of Shared bicycle market, the parking problem of urgently needs to be solved. At present, the most common bicycle parking rack in China is the spiral circular cage, which is simple in shape but not perfect in function. In this paper, a stereometric parking system was designed. It was divided into the upper and lower layers where the parking devices (including parking panels and racks) were installed. There were a number of parking racks with safety clamps were installed on parking panels radially outward from the center. The parking system had an opening on each layer for bicycle picking up or returning. This parking system doubled the parking space and solved the parking problems of Shared bicycles which made a great contribution to the city appearance.
A Study on Development and Evolution of the Intelligent Power Grid Information Communication Architecture
Authors: Li Yijie , Kang Zhongmiao , Wang Ying , Shi Zhan
Published: November 2019

According to the development plan of smart grid and the future demand of smart grid, the construction principles and development objectives of smart grid are discussed and analyzed. Based on the existing grid resources, and on the basis of ensuring full utilization of resources, a smart grid management system with significant advantages is realized, which fully guarantees the management convenience, reusability and portability of the system. On the basis of researching and analyzing the rules of the smart grid system architecture, an intelligent grid management system named “System of Systems” (SOS) is designed and developed, which is based on the open standard hierarchical service and replaces the old business silos with an integrated system. The smart grid system combines the scientific evolution route with service-oriented as the core feature to achieve a highly integrated management system to ensure the standardization of system data interaction protocols and the adequacy of data interfaces. In order to achieve good adaptability and compatibility of the smart grid system, the system can be optimized and adjusted flexibly and conveniently according to future changes in demand to ensure the reliability and stability of the system.
Credibility Model based on Space-Time Information and Interactive Evaluation in sharing model
Authors: Zhang Xiaobin , Zhang Jiacheng
Published: November 2019

Existing reputation calculations are mostly based on malicious behavior and other comments. They fail to effectively integrate impacting factors, ignoring the authenticity of evaluation and the complexity of interaction. A user reputation model based on spatio-temporal information and interactive evaluation is presented: user reputation is affected by ontology and evaluation reputation, and they interact with each other. Considering the synthetical influence of time, space and behavior, a time-space-behavior three-layer model is constructed to measure the time-space impact on ontology and the behavior impact on evaluation reputation; distributing weight to ontology and evaluation reputation, the reputation formula is established to obtain the user reputation. Experiments show the reputation model considers the influence of time, space and behavior on the ontology and evaluation reputation. The higher accuracy of the calculated user reputation has a higher application prospect for sharing mode user reputation evaluation.
Research on Artificial Intelligence Algorithm for Reactive Power Optimization of Distribution Network
Authors: Yue Chao , Yuan Lamajia
Published: November 2019

Reactive power optimization of power system is a complex problem with many variables. Its variable type from the continuous variable, namely, have discrete ‘variable again. In this paper, genetic algorithm is adopted as the reactive power optimization algorithm, and the minimum loss of active power network is selected as the objective function to discuss the reactive power optimization method of distribution network.
Research on the Impact of Internet Evolution on Accounting Information System Based on Data Mining
Authors: Gejing Xu , Yang Lan
Published: November 2019

The evolution of accounting is influenced by the accounting environment, and the most important one is the Internet environment. At present, the Internet is gradually moving towards the direction of cloud computing. Therefore, the author based on data mining on the evolution of the Internet on the impact of accounting information system to carry out research. The control weakness and risk of accounting information system based on Internet are analyzed. The research results show that the Internet itself has the characteristics of openness, globality, low cost and high efficiency. It will first change the business operation and management activities of the enterprise, which will affect the economic operation of the whole society. Therefore, enterprises must make revolutionary changes in accounting and other aspects to adapt to the requirements of the network era. This study has important practical significance for clarifying the direction of development, optimizing the construction of accounting information systems, and achieving sustained and comprehensive development.
Research on denoising optimization algorithm of point cloud in 3d reconstruction
Authors: Li Yan , Zhou Fugen
Published: November 2019

3 d reconstruction have become increasingly important in today’s information age, has become a bridge between real world and computer, usually in the access to the image due to factors such as equipment or environment are people hope there are a large number of high frequency signal, the pretreatment of the 3 d reconstruction is the most basic and crucial step in the technology. In this paper, an optimized adaptive filtering de-noising algorithm is proposed. The concept of minimum intra-class dispersion is introduced into the algorithm, and the genetic algorithm is used to find the optimal threshold, so as to eliminate the disadvantages of the algorithm in searching the scattered point cloud data and promote the overall performance of the algorithm. In this paper, the algorithm improves the speed, simplifies the initial point cloud model, and eliminates a large number of invalid points from the subsequent filtering algorithm.
Research on Risk Management of Big Data and Machine Learning Insurance Based on Internet Finance
Authors: Liu Quanpu
Published: November 2019

Insurance risk is one of the important risks faced by the insurance industry. Effective management of insurance risk is of great significance for preventing systematic risks in the insurance industry and stabilizing the stability of Chinese financial market. Risk management of insurance companies is a technical method to identify, measure and control risks. Its purpose is to directly and effectively promote the realization of organizational goals. Machine learning has a good ability to deal with non-linear classification problems. The risk assessment model based on machine learning can effectively improve the accuracy and applicability of risk assessment. The paper mainly discusses the important role and significance of big data and machine learning as an emerging data analysis method for insurance risk management, and introduces the random forest algorithm and its application in underwriting risk management.
Research on SDP Key Technology in 5G Mobile Communication System
Authors: Cai WanXiong
Published: November 2019

With the fifth generation mobile communication system research all-round, mobile communications company will according to the different network deployment, and related business needs through the software defined radio network control, and through data separation, the characteristics of the networked service section for customization to provide users with reasonable network services, in order to achieve flexible data transmission, network server sliced by SDP network function in the traditional mobile communication network data transmission protocol stack, combining with the code level analysis of input and output from the design, so as to achieve expected.
Computer Redundancy Management Technology Based on Non-Similar Platform
Authors: Fu Linglan
Published: November 2019

In order to study an efficient and reliable platform management computer, a non-similar platform management computer technology is designed. According to the structural characteristics of the computer management platform, a redundancy management strategy is developed. The redundancy management strategy of processor is studied. Then the priority order and voting strategy of four processors are determined, and several typical failure modes in practical work are discussed in detail. In order to verify the correctness of the synchronization strategy and redundancy management strategy, the principle prototype was tested, including the test of synchronization accuracy, typical debugging results and double redundant bus switching effect. The results show that the system runs stably and the four processor has good synchronization. It can achieve two fault works and three fault safeties, and it can realize bus switching.
Study on Multi-Objective Dynamic Optimization Method for Architectural Engineering Based on BIM
Authors: Wang Guangjun , Han Qi
Published: November 2019

At present, there are still many problems in the construction industry, such as low production efficiency, extensive production mode, high energy consumption, relatively backward technology and management mode. In this paper, we take use of BIM to establish a unified multi-dimensional optimization information model with multiple target of duration, cost and quality. And then, we propose a multi-objective mathematical model to improve the adaptive genetic algorithm. It helps to comprehensively realize the management and control of the three major objectives in engineering construction, and promotes the popularization and application of BIM technology in the construction industry.
Design and Implementation of Sport Virtual Museum Management System Based on ASP.NET
Authors: Liu Xiaofang , Liu Yan
Published: November 2019

At present, more common sports virtual museums are written in the language, but there are several problems in the following need to manually write code, which makes the efficiency of the creation of a museum is relatively low. Unable to connect to the database, the user can not use the unified management and use of the information. Due to the response of the event in the roaming process is the use of sensor mechanism, the function is relatively simple, so it can not meet the needs of users in the process of roaming. The sports virtual museum system mentioned in this article can solve the above three problems well. The system provides a convenient and efficient relics database management, database management, the establishment of virtual Sports Museum two-dimensional graphs of, sports virtual museum 3D browsing and other functions, the system is divided into three module user and relics database management module, physical virtual museum design module, Physical Virtual Museum browsing module. For user and relics database management module of cultural information and user information in the database management operations, the user can the cultural relics of the relevant information and model file and texture file stored in the database on the server according to the demand.
Research on Operation, Repair and Simulation Training Method of Electrical Equipment in Substation Based on Virtual Reality Technology
Authors: Xue Zhicheng , Gao Wenjiang , Li Xuan , Wu Weinan
Published: November 2019

Virtual reality technology is applied to substation training and a substation training system is established. Based on virtual reality technology, this paper studies the methods of substation electrical equipment operation, maintenance and simulation training. The overall structure of the substation training system is given, and the functions of the substation training system, the system software and hardware environment configuration and the object modeling method are introduced. The research results show that the application of virtual reality technology to construct virtual environment for substation simulation system can greatly improve the realism of substation scene. At the same time, the power system simulation software is connected with the virtual substation to simulate the various operating states of the substation, which brings a technological leap to the substation simulation training work.
Proficiency Testing for Determination of Ductility of Asphalt by Itera-tion Robust Statistic Technique
Authors: Wang Hao , Lin Zhenxing , Wang Qunwei , Ni Fengping
Published: November 2019

In order to investigate and improve the detection level of ductility of asphalt of laboratories, proficiency testing provider PT0031 (CNAS) has organized a proficiency testing program of ductility of asphalt of CNCA, and 87 laboratories from 21 provinces/cities/municipals and Taiwan took part in this PT. This work introduced the implementation process of proficien-cy testing for determination of ductility of asphalt, including the sample preparation, homogeneity and stability test, and the results of statistics of iteration robust statistic technique and analysis, summarized and analyzed different test standards widely used in the laboratories, and put forward the technological suggestions for the improvement of test quality of ductility. Satisfactory results were obtained by 85 laboratories, amounting to 97.7% of the total participating laboratories.
Designing a building automation system with open protocol communication and intelligent electronic devices
Authors: Suhanto S. , Faizah F , Kustori K.
Published: November 2019

Building Automation System (BAS) is a microprocessor-based control network setup for controlling a building’s technical service systems such as air conditioning, ventilation, lighting, and hydraulics. BAS main microcontroller automatically handles all electronics in the building. To control the liked devices to suit the needs of the buildings’ occupants, the controller needs to be smart or intelligent. The system will be very flexible if the communication network between control and device used an open communication protocol. In this paper, we present a miniature BAS solution implemented using intelligent electronic devices (IED) as controlling devices. The system is built using 8-bit microcontrollers, sensors, and actuators. There are three IED in use, each handling lighting, air conditioning, and water pumps respectively. Communication between the devices and the human-machine interface (HMI) used the free and open Modbus TCP protocol.
The design of the brantas river ecological monitoring is real time with OpenCV
Authors: Irawan R H , Ramadhani R A , Helilintar R , Trianggoro D
Published: November 2019

Brantas River is a river that is used by the people of East Java for drinking water sources, irrigation, regulating water discharge, and tourist attractions. However, the bad habits of the people around the Brantas River now have damaged the ecology of the Brantas River, one of these habits is throwing garbage. To protect the ecology of the Brantas river, a system is needed to monitor the activities of people who dispose of garbage in the Brantas river in real time using Open CV. One of our efforts is to establish a Closed Circuit Television system to monitor the activities of residents in the Brantas river area which is commonly used by people to dispose of garbage. The system applied is used to provide moral punishment to people who throw garbage. The way this system works is to record an area that is often used by people to dispose of garbage, if people find it throwing garbage, the admin system will take pictures and crop, then the photo is processed with Open CV. The introduction of people who throw garbage is done from the front view. From the results of the trial as many as 125 times, the system can recognize faces correctly as many as 117 times (93%).
Body temperature monitoring based on telemedicine
Authors: Fajrin H R , Ilahi M R , Handoko B S , Sari I P
Published: November 2019

In general, medical equipment at the Hospital to monitor body temperature such as a thermometer is less effective for nurses and doctors because it takes time to come to the patient’s room to retrieve body temperature data. Then, when the patient’s condition suddenly worsens, it still takes time for the treatment process. Therefore, the authors intend to make a tool that can help nurses monitor the patient’s body temperature through an Android smartphone in real time and equipped with telemedicine that can send notifications in the form of SMS when the patient’s body temperature is outside the normal limit. The working principle of this tool is that the body temperature data received by the DS18B20 sensor that will be processed by the Atmega328 microcontroller, then displayed on the OLED LCD and sent to an Android smartphone via Bluetooth HC-05. If body temperature data is outside the normal range, the Android application will send an SMS to another recipient’s smartphone. Based on the results of the tool testing, the highest data error results is 0.829% and the lowest is 0%. For the process of sending data using Bluetooth HC-05 by taking measurements every 1 meter, the maximum distance obtained is 13 meters with a hitch. In the application of telemedicine in the form of automatic SMS sending successfully sends body temperature to other recipient’s cellphone.
Android Radio Streaming Apps for Songgolangit FM Ponorogo
Authors: Muriyatmoko D , Asy’ari N A S , Arif M S
Published: November 2019

Songgolangit FM Radio is one of the information media in Ponorogo society. The broadcast signal has limited covered areas because of the geographical condition of Ponorogo. Then, the other media is needed to solve a problem. This research aims to expand the broadcast area using Android radio streaming apps. This research used the waterfall steps. The test using black box shows that the apps running well and have no error. The feedback from Songgolangit FM peoples expected that these apps hope could expand new user with especially to Android users. These apps can be download by all Android phone through the Google Play Store (https://play.google.com/store/apps/details?id=com.amoled.radiosonggolangit&hl=en). On the next research can measure the effectivity of radio streaming Android apps. Besides, future research also can develop its apps in other operating systems such as iOS, Tizen, Hongmeng and Blackberry mobile apps.
Indonesian High-Speed Railway Optimization Planning for Better Decentralized Supply Chain Implementation to Support e-Logistic Last Miles Distribution
Authors: Setyawan E B , Novitasari N
Published: November 2019

E-logistics must have better strategy because they must satisfy unpredictable demands which came from customer. Other consumer behaviours which affect e-logistics must work more efficiently are the requirement of last miles fast delivery and more competitive pricing. Decentralized supply chain model can handle all these issues and complex logistics activity although it only has one echelon model in the supply chain structure. Decentralized supply chain model doesn’t need a distribution centre but requires inventory sharing policy. Key to success inventory sharing policy is low lead time delivery. In Indonesia, only two transportation type which can handle product in low lead time, i.e., train cargo and aircraft cargo. Train cargo still needs high lead time but has low operation cost. Aircraft cargo can handle product in low lead time but need high operation cost. The trade-off in this condition is e-logistics need low lead time transportation tenant to satisfy demand until last miles delivery but has low operation cost not as expensive as aircraft cargo. Indonesia is developing high-speed train which connects Jakarta to Surabaya. In this research, we will review the level of effectiveness high-speed train in Indonesia to realized decentralized supply chain distribution network for handling e-logistics last miles shipping using dynamic system simulation. The output of this research is efficiency review of Indonesian high-speed railway cargo to support decentralized e-logistics supply chain distribution network, compared by aircraft cargo. After we perform simulation using dynamic system simulation, delivery of products between regions by using fast train is declared feasible to deliver products with fast delivery type if in one day there are six departure time (delivery batch). If less than six departures, the railway is declared unfeasible to deliver products with fast delivery type. However, the train can save about 37% batch delivery when compared to cargo aircraft.
Maturity Level Enterprise Academic Information System Based on Cobit
Authors: Lestariningsih T , Afandi Y , Setia L D , Qimyatuss’aadah Q , Echsony M E , Prihatinta T , Taali M , Srimiatun S
Published: November 2019

The success rate of the implementation of information systems applied to the public and private universities are necessary to determine the extent of the maturity level of the college information System management, allowing Management of the College knows what deficiencies are and in what direction the information system should be developed and managed. To find out what action to do for higher education advances need to evaluate maturity level, one of the frameworks used for evaluation is COBIT.This research uses the COBIT framework with the domain deliver and Support (DS) and Monitor and Evaluation (ME) to evaluate the maturity level of the college information system. The result of this research is the level of maturity of the college Informasai system is on good but there are some parts that need improvement, the improvement focused on the documentation of each service process on the academic information system and Oversight or control of system security as well as intense training and socialization.
Epilepsi detection system based on EEG record using neural network backpropagation method
Authors: Eviyanti Ade , hindarto Hindarto , Sumarno  , Duddin Herlian Aliyasa Alamj
Published: November 2019

Epilepsy is a manifestation of brain disorders with a variety of etiologies, but with the typical single symptom, periodic and reversible attacks, Epilepsy is characterized by an excess amount of electricity coming out of the brain cells, which can cause seizures and abnormal movements. EEG signals on epilepsy attacks have a characteristic pattern that allows health professionals to distinguish them from normal conditions (nonseizure). There are many methods used by researchers to recognize patterns of EEG epilepsy and non epilepsy signals in this study using Discrete Cosinus Transform (DCT) to perform the extraction of EEG signal features and Backpropagation Neural Networks for identification of EEG signal patterns. This research data using five classes of data sets of digital EEG signal taken from clinic Epileptologie University of Bonn ie data set A normal open eye signal, set B normal eye closed signal, C set enter the epilepsy zone, set D enter epilepsy, set E epilepsy seizures. The five class data are processed using DCT to obtain feature extraction, so results from DCT are used to perform identification using the Backpropagation method. The results of this study indicate that with feature extracted using DCT and identification process using Artificial Neural Network Backpropagation got EEG signal identification obtained for data set A, B, C, D and E is 76%, for set AB and CDE class data 73 %.
Practicing Energy Saving Habits of Elementary Students Through Development of Lectora Inspire Software Based Instructional Media
Authors: Sulistyowati P , Utomo D W , Batlolona JR , Saregar A , Hudha M N , Yusro A C
Published: November 2019

This paper intends to develop a software-based intructional media, Lectora Inspire. The data were obtained through experts validation on the developed instructional media. It took one media expert, one material expert, and 11 students. The data were then analyzed descriptively and quantitatively. The results and discussion confirm that the instructional media based on software, Lectora Inspire, is valid and feasible to be used in the learning process. The instructional media has met both media and materal requirements. It offers a convenient approach for students to understand the lesson content since it provides a real-life example which encourages them to imitate the habits. However, this instructional media needs a supporting facility such as computer which not all schools already have. More importantly, this software-based instructional media can be used as an effective learning resources.
Development of physics learning e-module based on local culture wisdom in Pontianak,West Kalimantan
Authors: Matsun  , Andrini V S , Maduretno T W , Yusro A C
Published: November 2019

This study aims to determine the feasibility and effectiveness of physics learning e- module based on local culture wisdom. This study is a development using ADDIE model of study design comprised five steps of analysis, design, development, implementation and evaluation. The sample used by 70 students with one group pretest-posttest design. Based on the research results, e-module based on local wisdom that is validated by three experts and three experts media material showed 83% in the category of very viable for use in learning. The effectiveness of e-module was tested using paired sample t test. The results showed no effect of the use-based e-modules of local wisdom to the learning process of physics. Values of N-Gain score indicates the percentage of 81% (in the effective category). E-modules used in this study utilizes the android based smartphone technology. Local wisdom that becomes a source of learning is a game “carbide cannon” who came fromPontianak, West Kalimantan, the terms of the concepts of physics and chemistry. Students’ response to the media developed showed an average score of 87% ratings with very good category.
Effect of materials character on the design of the 12 slot 8 pole generators on power efficiency
Authors: Salim A T A , Romandoni N , Aminudin A , Wardana D W S , Sudibyo E
Published: November 2019

The development of renewable energy as electrical energy needs to be followed by the provision of high-efficiency generators, especially for small-scale alternative energy uses. This study discusses the effect of the character of materials on the design of 12 slots 8 pole generator on power efficiency. the material used for the discussion of this research is copper and aluminum as materials for the coil. comparison of these two material to find the coil forming materials with the highest efficiency. As a result of the experiments described above, the use of aluminium material as a coil can reduce efficiency by 0.1% from the use of copper material as a coil.
Providing different type of bracing in the existing building structure under seismic load
Authors: Rohman R K , Cahyono S D , Fatmawati L
Published: November 2019

This paper presented the influence of the providing different types of the bracing system in the existing building structure. The selected object of analysis is Timbul Jaya Plaza building that located in Madiun City Indonesia. The system of building structure is Moment Resisting Frame (MRF). Seismic loading analysis use equivalent static analysis base on SNI 1726 2012. Modelling and analysis of structure use computer software ETABS version 9.00. Aim of this research to compare the use of different types of the bracing system under seismic load. Type of bracing that analyzed is X-bracing, V-bracing, and Inverted V-bracing. Model of structure without bracing used as control. Result analysis known that the providing of X-bracing will decrease maximum displacement until 36.28 % compared with existing structure without bracing and increase the stiffness of structure.
Investigation of resistivity for delineation aquifer layers and subsurface structures
Authors: Jufriadi A , Ayu H D
Published: November 2019

Delineation of aquifer layers and subsurface structures using investigation of resistivity was accomplished. The results of geoelectric resistivity investigations was described of the detailed subsurface structures conditions and clear aquifer layers. The resistivity geoelectric and well logging methods were used in this study because both of these methods give correct and efficient results, due to the strong correlation between the resistivity values of rock layers and the subsurface structure conditions. Result of investigations show research areas have potential aquifers with wide-spread. The potential of aquifers consists of surface aquifers and deep aquifers, with surface aquifers at a depth of 41 to 50 meters with resistivity values of 30.5-145 ohm-meters, and deep aquifers at depths between 140 to 170 meters with a resistivity of 14.7-46.8 ohm-meter. While the subsurface structure was dominated by clay, sandy clay, sand.
Resonant-frequency properties of low-dimensional junction of semiconductor-metal-semiconductor and calculation methodology
Authors: Valiukhov D P , Baklanov I S , Shtab E V , Shtab A V , Pigulev R V , Iliasov A S
Published: November 2019

The article describes frequency characteristics of semiconductor–metal–semiconductor Si–Ag–Si structures (ohmic contacts) having metal nanolayers as well as features of resonance phenomenon and sandwich structure energy interaction. Mathematical simulation of mentioned above processes is provided. The limiting factor for resonance process is determined. It is found that the resonance frequency is a subject of semiconductor-metal junction parameters while metal layer thickness impact is minor.
Evaluation of the traction-chain properties of a wheel tractor in dry peat deposit
Authors: Basalay G A , Kremcheev E A , Nagornov D O
Published: November 2019

The paper highlights the results of studies on the creation of a measuring complex suitable for experimental studies of the towing and coupling and dynamic properties of wheeled tractors operated in difficult geological conditions of peat deposits of various degrees of drainage. The conceptual solutions for the layout of the measuring complex, which allows carrying out field measurements of the kinematic and dynamic parameters of machine-tractor units, to measure the hook force and torque on the power take-off shaft, are presented. Solutions are proposed to support the testing process with auxiliary devices that create hook loads on tractors. The requirements for the organization of a technological site for conducting traction tests of wheeled tractors are given. As a result of the research work, a test procedure was developed; the issues of metrological support of research and processing of experimental data were resolved.
Nature-like equipment for backfilling the mine chambers to reduce the risks of technogenic seismic impact
Authors: Vasilyeva M A , Bochkov V S
Published: November 2019

The priority task in the mineral industry is to increase the efficiency of the exploited and infrastructure, equipment, including the creation of transport systems that have high performance while reducing the cost of transporting mineral raw materials and products of its processing. One-third of the world’s mining companies use their mining systems at their enterprises to create a space. Backfilling activities are carried out in order to improve the safety of mining operations, namely, to control mining pressure, reduce possible mineral losses during excavation, prevent the occurrence of underground fires, as well as sudden outbursts of coal and gas, protect against destruction of objects in residential areas. Particular attention should be paid to the use of hydro-folding as a measure to prevent technogenic-tectonic earthquakes during long-term and continuous development of deposits. Taking into account the peculiarities of the materials used as a base when preparing filling mixtures, the specificity of the process of moving them to the bookmark site, necessary for obtaining a backfill array of required characteristics, is becoming increasingly important to use fundamentally new transport technologies for filling mixtures.
Determination of main parameters of clay grinder
Authors: Dubinin N N , Mikhailichenko S A , Goncharov S I , Uralskaya L S
Published: November 2019

The article presents the main technological and power parameters of the clay grinder which depend on a number of geometric parameters, and various rheological characteristics of the processed material made it possible to derive pressure dependencies based on the flow of ductile masses which will allow designing such machines with rational geometric and kinematic parameters.
Methods for controlling the vibration state of technical facilities
Authors: Karlina A I , Gozbenko V E , Kargapol’tsev S K , Karlina Yu I
Published: November 2019

The article considers the features of the dynamics of systems with several degrees of freedom with the introduction of additional constraints. As an example, the authors consider the computational scheme of a locomotive traction engine with an axial overhung support. Different cases of the combination of perturbations were analyzed and the conditions for dynamic damping were determined. The specificity of the tasks to be solved was in the necessity to determine the conditions while choosing system parameters that would minimize the occurrence of cross-couplings. These conditions were determined and implemented through the introduction of additional inertial elements into the system structure. With an appropriate choice of system parameters, the vibration platform can be invariant with respect to the deviation to the kinematic effect xj(t). The necessary conditions that can be obtained by parallel inclusion of inertial and elastic elements in systems with low friction were considered.
Implementation of the six sigma method in the educational process
Authors: Kremcheeva D.A. , Kremcheev E A
Published: November 2019

The article describes the theoretical and practical aspects of the Six Sigma methodology and features of its implementation to optimize the educational process. The regulatory documents that can be used in the implementation of the method were analyzed. Particular attention was paid to the practical features of the implementation of the Six Sigma method and the development of target indicators of the educational process effectiveness. The developed system of performance targets is reliable and measurable and can be used in assessing the effectiveness of the educational process. The study also provided insights into the benefits of using the Six Sigma method in an educational institution. The goal of the study is to adapt the Six Sigma method for its use in the educational process and to analyze the main difficulties in the implementation of the method. The object of research in this article is the educational process. The analysis of scientific data, systematization was used in the article as a research method. Target performance indicators were developed by compiling and detailing information from literary sources, government standards and regulatory documents.
Low-cost sorption technologies for large-tonnage wastewater treatment in mining industries
Authors: Matveeva V A , Chukaeva M A , Sverchkov I P
Published: November 2019

The current state of water bodies in the zone of influence of the largest mining complexes in Russia – JSC “Apatit” and JSC “Kovdorsky GOK” was assessed on the basis of the conducted monitoring studies. The review of the natural and artificial materials with the high sorption capacity was carried out on the purpose of elimination of the revealed sources of hydrochemical anomalies. The paper presents the laboratory test results of sorbents depending on the methods of their modification, composition and properties of purified water. The introduction of developed sorbents into the wastewater treatment systems will significantly reduce the negative impact of the mining enterprises on surface waters, thus it will improve the environmental situation in the studied areas and the life quality of the local community.
Study of electronic and optical-mechanical levels
Authors: Pimshin Yu I , Zayarov Yu V , Arsenyev D M
Published: November 2019

The article presents the study of electronic and optical-mechanical levels. It describes the vertical comparator and the method of its use in the study of levels. In addition, a variant of the universal comparator which improves stationary capabilities is proposed. In the study of levels the errors in measuring exceedances at specified working distances are determined, including a description of the procedure for determining errors of undercompensation of the level slope and the total error of the course correctness of the telescope focusing lens and the errors of applying divisions of the range poles for optical levels, and scales with Rab-code divisions for electronic ones. The article is written as part of the implementation of the NRNU MEPhI Competitiveness Enhancement Program.
Automation of mass fraction determination of water in petroleum in the laboratory
Authors: Serzhantova M P , Tynchenko V S , Bukhtoyarov V V , Petrovsky E A , Kukartsev V V , Tynchenko V V
Published: November 2019

Petroleum quality indicators should be monitored at all stages of petroleum production, preparation and transportation quickly and efficiently. Such a critically important indicator as the mass fraction of water in petroleum determines not only its quality, but also has a huge impact on the performance properties of the equipment and the pipeline. The article demonstrates the automation of laboratory research in determining the mass fraction of water in petroleum: the modernization of existing research using optical sensors and a data acquisition board. As a result, the complexity of the research is reduced, the work of laboratory research is optimized. The article presents the assembly diagram of the automated installation, compiled an algorithm for the software.
Numerical modeling of thermodynamic parameters for mixtures with a few-parameter equation of state of their components
Authors: Maevskii K K
Published: November 2019

The results of numerical experiments on shock-wave loading of heterogeneous mixtures including tungsten and copper as a component are presented. Thermodynamically equilibrium model with a modified equation of state is used for modeling of thermodynamic parameters of pure materials and mixtures. The thermodynamic parameters for copper of different porosity are calculated for few-parameter equation of state, values of compression ratio and temperature along the shock adiabat are determined; the value of heat capacity at normal pressure is calculated. The results of calculations are compared with the known experimental results of different authors. The calculation of thermodynamic parameters under shock-wave loading for mixtures including tungsten and copper as a component is performed.
Experimental research of thermodynamic properties of water + aliphatic alcohol mixtures in the wide range of parameters of state
Authors: Osmanova B K , Bazaev A R , Bazaev E A
Published: November 2019

Experimental data of p, r, T, x - relations for water+aliphatic alcohol binary systems (methanol, ethanol, n-propanol) for values of composition x (0.2, 0.5, 0.8 mole fraction of alcohol) among the phase equilibrium line in one phase (liquid, vapor) and in supercritical regions are described by polynomial polynomial equation of state, represented by expansion of the compressibility factor Z = p/RTρ into a power series of density and temperature:

Z
=

p

R
T

ρ
m

=
1
+

∑

i
=
1

m

∑

j
=
0

n

∑

k
=
0

s

a

i
j
k

ω
i

x
k

/

τ
j

, and

p
=
R
T

ρ
m

=

[

1
+

∑

i
=
1

m

∑

j
=
0

n

∑

k
=
0

s

a

i
j
k

ω
i

x
k

/

τ
j

]

, where ω = ρ/ρc
and temperature τ = T/Tc
– is reduced density and reduced temperature; ρc
, Tc
– critical density and critical temperature; R = 8.314 J/(mol⋅K) is the universal (molar) gas constant.

The average relative deviation of calculated values of pressure from experimental ones is 1.1%. By using this equation and expressions thermodynamic properties: coefficient of isothermal compressibility KT
, coefficient of volume thermal expansion, pressure coefficient, internal pressure pi
, isochoric heat capacity Cv
, isobaric heat capacity Cp
, speed of sound, adiabatic index k, Helmholtz free energy F, Gibbs energy G, entropy S, enthalpy H, internal energy U, differential isothermal throttling effect dis
, differential adiabatic throttling effect dad
.
Correlation between the electrical resistivity and thermal expansion of intermetallide Ti3Al
Authors: Murlieva Zh Kh , Palchayev D K , Iskhakov M E , Rabadanov M Kh
Published: November 2019

The results of in situ studies of the electrical resistivity (ρ) and the thermal expansion coefficient (α) of the polycrystalline Ti67Al33 intermetallide in the 300–1000 K range are presented. It has been established that the temperature dependence of the electrical resistance of single-crystal and polycrystalline samples differs significantly, and the corresponding heat treatment of this alloy makes it possible to control the values of the resistivity. It is shown that there is a correlation between the dependences ρ = f (T) and α = f (T) in the indicated temperature range.