bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of Organic Basic Multrinutrient Block Supplementation on Total Mixed Ratio of Kacang Goat in Feedlot System
Authors: Pujaningsih R I , Widiyanto  , Tampoebolon B I M
Published: November 2019

The research was managed to assess organic basic multi-nutrient block supplementation on the performance of Kacang goat that fed by total mixed ratio in feedlot system. This research was carried out for 3 months, used 15 goats with the average body weight of 13.40 ± 1.97 kg. The study was arranged in a completely randomized design with 3 treatments and 5 replications. Goats were divided and fed with one of the treatments as follows: P0: only forage, according to the farmer’s way; P1: total mixed ratio; P2: total mixed ratio + 15g multinutrient block/head/day. Variables of initial body weight, final body weight, body weight gain, and feed consumption were observed. The study indicated that goats of P1 and P2 had a significantly higher final body weight in average of 29,32 and 32,38 kg (P < 0.05) compared with P0 (27,45 kg), respectively. Body weight gain of goat P2 was significantly higher (P < 0.05) than P1 Kacang goat. This study suggests that treatment P2 resulted in the highest body weight gain.
Characteristics of the Existing Rainfed Rice-Bali Cattle Production Systems in Maliana, Bobonaro, Timor-Leste
Authors: de Araújo Mali Code C , Supangco E P , Capitan S S , Aguilar E A , Dizon J T
Published: November 2019

The study area reveals that small-scale subsistence cropping of rice, maize and coffee remained in Maliana. Farmers obtained their income primarily from farming characterized by relatively low yield which they attributed poor application of improved technologies like the use of quality seeds, fertilizer and other inputs. Other than crops, farmer-respondents also integrate Bali cattle in their farms during fallow period where rice straw became available for the animals. Farming systems are diverse and most farmers also raise livestock (cattle, water buffalo, goats, sheep, chickens and pigs). Native pastures which comprise mainly native grasses and some legumes such as Leucaena (ipil-ipil), Gliricidia (madre de cacao) and other edible plants provide a cheap source of feed. Livestock range freely with no grazing management which gradually lead to loss of vegetative cover and soil erosion. Moreover, survey results reveal that majority of farmer-respondents had inherited the practice of raising Bali cattle from their parents. It was found that they have been raising cattle from 5 to 40 years. A big proportion of respondents got their knowledge for raising cattle from the government with conditions such as provision of training on feeding, pest and disease control, free vaccines and other technical support. As a consequence, farmers mentioned that the availability of inexpensive and quality forages, especially during the long dry season (6-7 months) is a major constraint on cattle production in the seven villages of Maliana. The farmers depend heavily on locally available natural feed resources, but there is a shortfall due to limited land availability and uncertain local climatic patterns. This is aggravated by the inadequate support extended to farmers in terms of improved technology in crop-livestock farming system is aggravated by the scarcity of resources and reluctance of farmers to adopt improved technologies.
The Effect of Chronic Energy on Increasing the Effectivity of Pregnant Women’s Nutrition Using Decision Support Systems (DSS) with Analytical Hierarcy Processs (AHP)
Authors: Wahyuni Y , Tus Sa’diah H , Zaddana C
Published: November 2019

The Indonesian Ministry of Health in 1999 proclaimed LILA as a measure of the upper arm circumference used by pregnant women in childbearing age as a chronic energy deficiency indicator (SEZ), with a LILA limit of <23.5 the risk of SEZ. Chronic energy deficiency can cause low birth weight babies (LBW), so pregnant women will be at risk of experiencing difficulties and pain during the birth process. The lack of technology that can quickly determine how pregnant women experience Chronic Energy Deficiency has an impact on increasing the mortality rate in pregnant women and the conceived fetus. Some variables of effectiveness of nutritional intake of pregnant women such as diet, exercise, vitamins C, D, and E are the nutrients needed during pregnancy. There is no proper formulation to know the nutritional needs of pregnant women and nutritional quality factors are different, so nutrition experts desperately need a petrified system to analyze quickly, accurately, easily, effectively and efficiently in determining the best decisions from various alternatives for pregnant women who lack symptoms of energy Chronic (KEK) by combining analytical data and models on computerized systems using multicriteria Decision Support System (DSS) method, namely Analytical Hierarchy Process (AHP). This study designed the DSS using AHP method by combining Expert Choice in it. DSS research is designed not to make decisions, but as a tool that helps to support decision making.
Comparative Analysis of Efficient Image Segmentation Technique for Text Recognition and Human Skin Recognition
Authors: Cahyadi Septian , Damatraseta Febri , Sugara Victor Ilyas
Published: November 2019

Computer Vision and Pattern Recognition is one of the most interesting research subject on computer science, especially in case of reading or recognition of objects in real-time from the camera device. Object detection has wide range of segments, in this study we will try to find where the better methodologies for detecting a text and human skin. This study aims to develop a computer vision technology that will be used to help people with disabilities, especially illiterate (tuna aksara) and deaf (penyandang tuli) to recognize and learn the letters of the alphabet (A-Z). Based on our research, it is found that the best method and technique used for text recognition is Convolutional Neural Network with achievement accuracy reaches 93%, the next best achievement obtained OCR method, which reached 98% on the reading plate number. And also OCR method are 88% with stable image reading and good lighting conditions as well as the standard font type of a book. Mean while, best method and technique to detect human skin is by using Skin Color Segmentation: CIELab color space with accuracy of 96.87%. While the algorithm for classification using Convolutional Neural Network (CNN), the accuracy rate of 98%.
The implementation of the Kruskal algorithm for the search for the shortest path to the location of a building store in the city of Bogor
Authors: Erniyati  , Citra P
Published: November 2019

The shortest path is a very important thing in a business sector, especially in sending goods by land. One of the obstacles faced in the shipment of goods is the determination of the trajectory. Determining the best trajectory can minimize shipping costs and time is more efficient A designated algorithm or system is required to search for the shortest and the most optimal traffic path from various numbers of existing alternative pathways. The Kruskal algorithm is one of the algorithms used in solving minimum spanning tree problems by choosing the side that has the smallest weight of each node with the notes that the selected sides cannot form a closed circular. For Case on study, we used data activities is controlled by land transportation from PT. T A. The results showed that with the application of the Kruskal algorithm in the case of finding the closest route to the building store for shipping goods, the optimal path was obtained. The distances of the 12 data that was tried there were 83% data which were smaller than the google map direction API.
Comparative analysis of inline quality control system process capability with offline lab QC against product specification by MSPC method
Authors: Hidayat Yuyun , Winarni Sri , Purwandari Titi , Sukmawati Anita , Sukono
Published: November 2019

The similarity of values shown by the two methods of reading paper specifications, namely Quality Control System (QCS) and QC Lab (controlling offline in Quality Control lab) to the attention of PT Bukit Muria Jaya (BMJ). The QCS is an online control process while QC Lab is offline control process. The company wants to change the offline control process online, but there is no analysis to show whether the output given by both methods is the same. The study involved Grade A paper measured at once by five paper specification parameters, i.e. paper weight, porosity, CaCo3 content, opacity, and paper strength. However, after normality testing was found, the data is not multivariate normal distribution. Therefore, this study aims to answer the problem with a multivariate free distribution procedure. The study was conducted in two stages, firstly by looking at the median equality of both outputs of the paper specification reading method, and the second is by looking at the similarity of characteristic capability. A preliminary study was conducted to see whether the two methods of reading the Grade A paper specifications had the same median. This test is done by Kruskal Wallis Multivariate method. The results of the analysis received a null hypothesis which means the median of the two outputs generated QCS and QC Lab for each Grade A paper are equal. Furthermore, based on a capability comparison analysis where the value of this capability is derived from the sample without observation out of control, out of control process control is assisted in the range of T2 Hotelling Control Free Distribution. It can be concluded that Grade A paper capability of QCS does not show the same result as QC Lab, i.e. Porosity variable, where Porosity is capable in QC Lab but not QCS, so manual process control for Grade A paper cannot yet be replaced online.
Study on the continuous cooling transformation behavior of heavy thickness X80 pipeline steel
Authors: Zhang Hai , Li Shaopo , Ding Wenhua
Published: November 2019

In this paper, the continuous cooling transformation behavior of heavy thickness X80 pipeline steel after two steps deformation was studied by Gleeble1500 thermal simulator. The continuous cooling transformation (CCT) curve of the sample was set up according to the thermal dilation curve and microstructure. The results show that during the continuous cooling process, ferrite and degenerated pearlite in the X80 are obtained in the high temperature phase transformation region. The bainite in the X80 was obtained in the medium temperature transformation region, and when the cooling rate is less than 20°C/s, the micro structure is granular bainite. When the cooling rate is between 20∼30C/s, the mixed microstructure of granular bainite and lath bainite were obtained. According to the CCT curve, in the production, the start cooling temperature and cooling rate should be controlled properly to get expected microstructure so as to ensure the property requirements of the steel plate.
Research on the Effects of Nonsmooth Surfaces on Backward-facing Step Flow
Authors: Zhang Mingxiao , Song Xiaowen
Published: November 2019

To achieve the purpose of backward-facing step flow control, a passive control approach, which consists in introducing nonsmooth structures in solid walls, is applied to the upstream of the backward-facing step. Based on STAR CCM+ software, the standard k-ε turbulence model was established to simulate flow characteristics of the right angle step, fillet step and nonsmooth fillet step. The introduction of the nonsmooth surface leads to a significant reduction in recirculation region length (17.5%) and a decrease in downstream wall pressure coefficient. According to the analysis of separation point position and turbulent kinetic energy, the delay of separation point and the enhancement of momentum exchange are the main reasons for the success of flow control. Compared with the right angle step, the delay of flow separation of the fillet step leads to a reduction in step expansion ratio (ER), and the existence of the nonsmooth structure enhances the turbulent kinetic energy at the fluid separation points and the momentum mixing at the downstream of the step, thus reducing the reattachment length and the downstream wall pressure coefficient.
Topology optimization of truss support systems for a point- supported glass curtain wall based on truss-like continua
Authors: Cui Hao , Zhou Kemin
Published: November 2019

Steel truss structures for point-supported glass curtain walls with a web member configuration are presented using topology optimization based on truss-like continua. The initial structure comprises chords and partial web members. The initial design domain, surrounded by the members of the initial structure, is filled with a truss-like continuum, which is used to simulate the distributive web members of a steel truss. The structure members, together with the truss-like continuum, are analysed and calculated under horizontal point forces. The densities and orientations of the truss-like members at every node are taken as design variables and optimized. The members in the truss-like continuum are optimized using the fully stressed criterion. The topology optimization problem of minimum compliance with volume constraints is solved. Thus, an optimal web member configuration that suitably reinforces the lateral stiffness of the structure is obtained.
Numerical Analysis of the Influence of Atmospheric Plasma Gun Structure on Plasma Flow
Authors: Tan Chao , Tao Li
Published: November 2019

To investigate the gun structure influence on gas flow characteristics during plasma spraying process, a simplified 3-D computing model was developed to calculate the multi-physical properties of the gun. The geometric model included cathode and anode, and electrodes boundary layers. Besides the temperature of ions and electrons was treated separately. In other words, the model used a two-temperature plasma model, which took into account ionization and recombination reactions of ions and electrons, the plasma flow inside the spray gun was studied. From the calculation results, decreasing of gun throat diameter caused the increase of velocity and decreasing of temperature. The change of velocity behaved a linear relationship with diameters, while temperature decreasing slowed down when the diameters reached a certain value. The research will provide theoretical guidance for the optimal design of spray gun.
Improved IGBT Dynamic Model and Electro-Thermal-Mechanical Multi-Field Coupling Failure Analysis
Authors: Zhou Jianbo , He Yigang , Liu Jiacheng , Ni Huadong , Peng Zhangsheng
Published: November 2019

Failure of insulated gate bipolar transistors (IGBTs) can make a serious impact on the entire rectification or inverter system. IGBTs are used in different practical applications, causing a large difference in the form of failure of its solder layer. Therefore, it is necessary to study the aging failure law of IGBT solder layer. Firstly, the improved IGBT dynamic model is used to build a three-phase rectifier circuit and correct its circuit power consumption error. Then constructing three-dimensional finite element model of IGBT and analyzing its chip temperature and solder layer stress distribution under electro-thermal-force multiphysics coupling. Finally, the randomly generated solder layer defects are used to investigate the effects of voids, cracks, etc. on solder layer failure, and the aging failure mechanism of the solder layer is obtained. The simulation results show that after the solder layer defect area ratio is higher than 15%, solder layer voids, cracks and shedding have a significant effect on chip junction temperature and solder layer stress. Among them, shedding and cracks have a greater influence on the stress of the solder layer.
Design of Power Converter for Aluminum Air Battery
Authors: LI Xunda , Wang Yuhua , HE Hongbo , LI Gang , Liu Weiming , Zhang Shuxiong
Published: November 2019

In order to improve the output voltage performance of the aluminum air battery and improve the conversion efficiency, according to the output voltage characteristics of the aluminum air battery pack, we propose an LLC resonant converter based on integral separation PID control and voltage feedforward control. Then the main parameters of the converter were designed and finally simulated by MATLAB/Simulink. The experiment proves that the control method adopted by the aluminum air battery converter effectively improves the dynamic performance index of the system compared with the conventional PID control.
DOUBLE WINDING TRANSFORMER ARTIFICIAL INTELLIGENCE VOLTAGE REGULATION COMPENSATION ALGORITHM
Authors: Sheng Zhong
Published: November 2019

To solve the current double-winding transformer voltage regulation effect is not good, and so on, put forward the double-winding transformer artificial intelligence voltage regulation compensation algorithm. Based on double winding transformer voltage regulation control method and the configuration parameters optimization, reasonable setting standards regulating parameters of artificial intelligence, in order to guarantee the accuracy of the pressure regulating compensation, combined with the optimization allocation algorithm of artificial intelligence pressure regulating compensation standard parameters setting, so as to complete the double winding transformer voltage regulation compensation algorithm of artificial intelligence research. Finally, it is proved by the experiment that the algorithm of artificial intelligence voltage regulation compensation of double-winding transformer can restrain voltage harmonics effectively and guarantee the voltage regulation compensation effect of artificial intelligence of transformer.
Comparative Analysis of Inventory Compilation Methods for Ship Emissions
Authors: Li Yue , Li Mingjun , Cheng Jinxiang , Wang Renjie , Xu Honglei , Zheng Chaohui
Published: November 2019

In recent years, a variety of inventory compilation methodologies have been developed for ship emissions. With a detailed comparative analysis of the 5 major methods on applicability scope, calculation difficulty, accuracy, time and space distribution etc., this paper aims to be of reference for the selection of the most appropriate approach to emission inventory compilation.
Multi-objective disassembly sequence optimization aiming at quality uncertainty of end-of-life product
Authors: Li Shengqiang , Zhang Hua , Yan Wei , Jiang Zhigang , Wang Han , Wei Weijie
Published: November 2019

Remanufacturing plays a vital role in circular economy due to its enormous contribution in promoting resources recycling and utilizing. Disassembly of end of life (EOL) products, as a prerequisite of remanufacturing, is an effective means to improve resource utilization and reduce environmental impact. However, because of the complex quality conditions of EOL products, different disassembly method and sequence for components may lead to different effects. Based on this, a multi-objective disassembly sequence optimization model considering the quality uncertainty of EOL products is proposed in this paper. Firstly, remaining life of each component of an EOL product is calculated by using the Weibull distribution and artificial neural networks (ANN), and then the disassembly modes could be chosen according to their quality conditions. Secondly, a multi-objective disassembly sequence optimization model which takes minimum disassembly time and cost as the objective is established, and the particle swarm optimization (PSO) algorithm is employed to solve this model. Finally, a case study of drum washing machine disassembly is provided to verify the feasibility and superiority of the proposed methodology.
Analysis of Influencing Factors and Experimental Study on Properties of Laser Cladding Layer
Authors: Cui W H , Wang H , Shao D Q , Han B , Lin J Y
Published: November 2019

Laser cladding is an additive manufacturing or surface modification technique for parts. The quality of cladding layer is the key to determine the performance of cladding parts. The influence of pretreatment and post-treatment on the quality of cladding layer is analyzed. Through the experiment, the pretreatment process suitable for small, medium and large automobile moulds is explored. The effects of laser power, scanning speed, powder feeding speed and defocusing amount on the morphology, quality and property of the cladding layer were studied. With 45 steel material as the substrate and Fe15Cr1.9Ni1.2B1.23Si0.55Mo0.24C as cladding material to manufacture laser surface cladding. The samples with 50% cladding layer are made and the tensile tests are carried out. The mechanical properties of metallurgical bonding layer and cladding layer between matrix and cladding layer were studied, and the cladding quality of laser cladding of ferroalloy was explored.The test results are as follows: After laser cladding of 45 steel matrix, the metallurgical combination of matrix and cladding layer is good, the tensile strength of the metallurgical binding layer and cladding layer is greater than the tensile strength of the substrate.
The optimum design of the flapping-wing mechanism
Authors: Yafeng Zhang , chunming Yu , Xvhui Zhang , Liang Yao , Jvxin Qu
Published: November 2019

This paper presented a numerical model of flapping-wing mechanism and optimized mechanism parameters by genetic algorithm. The result of optimization shows right-and-eft asymmetry of mechanism motion was greatly reduced to 17.07% of initial mechanism. The right-and-left asymmetry of wing motion of flapping-wing was greatly improved. It proves the feasibility and veracity of genetic algorithm applied on optimization design of flapping mechanism.
Fluid Storage Structure Optimization Based on Fluid-Solid Coupling Analysis and Response Surface Method
Authors: Bao Shigang , Jiang Cuixiang , Ding Junyan , Hu Wenwen
Published: November 2019

The optimal structure parameters of the reservoir structure are investigated in this work. Based on bidirectional fluid-solid coupling analysis, a design of experiments (DOE) using the Latin hypercube sampling (LHS) is employed to build the response surface model of the reservoir structure. Response surface models have been shown to have good fitness. Multi-objective genetic algorithm (MOGA) is presented to search a precisely Pareto-optimal frontier for the problem. Numerical results show that the optimization method based on response surface model and response surface method can effectively overcome the limitations of experience dependence and obtain most efficient solutions for the problem. Through the optimization, the weight of the reservoir structure is reduced by 16.4% while the strength and stiffness of the structure has a little change.
Research on Talent Ecosystem of High-end Equipment Manufacturing Industry in Zhenjiang High-tech Zone
Authors: Li Xinying
Published: November 2019

Aiming at the talent ecosystem of high-end equipment manufacturing industry in Zhenjiang High-tech Zone, studies the mechanism and law of interaction between talent and talent environment from the perspective of ecology. Applies the theory of talent ecosystem to the practice of talent development in high-tech zone, establishes the talent ecosystem of high-end equipment industry in Zhenjiang High-tech Zone from the perspective of ecology, finds and solves the problem of high-tech. The problems existing in the talent system in the region provide new solutions for the construction of high-level talent system in high-tech zones, provide talent support and intellectual support for the promotion of high-quality development in Zhenjiang.
Stability analysis of Hoist Vertical Shiplift chamber under pitching motion
Authors: Lang Shi , Yang Zhang , Hao Chengxiong , Ji Zhou , Wei Shiduan , Re Xia
Published: November 2019

Aiming at the stability problem of large Hoist Vertical Shiplift chamber under pitching motion. A fluid dynamic model based on the Housner theory is built to study the sloshing in the ship chamber. The theoretical formulas of the capsizing moments are derived to research the effect of sloshing. To study the whole shiplift pitching stability, the system coupled by pitching motion, torsional vibration of main hoist and sloshing is built. Then, the critical distance of lifting points is obtained by using the Hurwitz theory. Taking seven built typical Hoist Vertical Shiplifts as examples, it is verified that the expression about the critical distance of lifting points is rational. The calculation results show that the sloshing in the ship chamber and the capsizing moment produced by the convective pressure acting on the sidewall of ship chamber could not be neglected in the design of the Hoist Vertical Shiplift. According to the successful experience of the Hoist Vertical Shiplift, it is suggested that the safety factor S of the shiplift under pitching motion should be more than 1.5.
Research on Improvement Measure of Fast Fault Point Transfer Technology
Authors: Qi Zheng , Diao Chunyan , Zheng Yuhang
Published: November 2019

The fast fault point transfer technology has been widely used in China. Aimed at the single-phase arc-grounding fault in the neutral point non-effective grounding system, the principle is to suppress arc re-burning by grounding the faulty phase bus directly to limit the voltage of fault phase. However, the on-site operation found that the technology could not guarantee the arc on the fault point extinguished reliably. The effects of arc characteristics, bus grounding time, impedance of lines, load current and transition resistance on arc extinguishing are analysed in depth. Among these factors, the grounding time is the only controllable factor. The improvement measure of grounding the faulty phase bus at the zero point of the arc current is proposed, and the hardware and software flow are designed. The proposed method was simulated and analysed by ATP software. The simulation results verified the reliability and accuracy of the proposed method.
Dynamic Modeling and Attitude Control System of Underactuated Fuel Slosh with Flexible Appendages
Authors: Hussein Mokhtar , Qian Longjun
Published: November 2019

This paper investigates the dynamics and attitude control of the pitching motion of an axisymmetric liquid-filled satellite with flexible appendages under the conditions of zero gravity and constant thrust (fixed axial acceleration). Using Lagrange method, the dynamics model of the flexible liquid-filled satellite is established. The flexible appendages are considered as Euler–Bernoulli beams, and the sloshing liquid is modeled as a spring-mass model. Considering the motion of the satellite in the orbit plane and pitching attitude motion, a sliding mode controller is designed by decoupling the satellite dynamics equation into a typical underactuated system. The influence of the vibration of flexible appendages and the slosh of liquid fuel on the attitude control of the spacecraft is considered. The results show that the designed controller can effectively suppress the liquid sloshing and the vibration of the flexible appendages in such a manner as to achieve the desired result and control target.
Performance analysis on an in-service escalator driving chain
Authors: Ren Facai , Liu Xiaochang , Liang Xiao , Wu Xinghua
Published: November 2019

The performances of an in-service escalator driving chain were investigated. The tensile properties were analyzed by conducting tensile tests. The chain plate was investigated based on the optical microscope and scanning electron microscope analysis. The results show that the surface of the outer chain plate has poor and decarbonized phenomena.
Research on Power Grid Environmental Protection Management Information System Based on Time Series Characteristic
Authors: Dan Yang , Jinyang Li , Rui Li , Shimeng Dai , Ning Luo
Published: November 2019

With the continuous improvement of the voltage level of power system and the continuous expansion of the scale of power grid, the problem that the environmental protection information data of power grid is single and can not be centralized analyzed and utilized is highlighted. It is necessary to strengthen the construction of information management for power grid environmental protection. The time series characteristic is an orderly set of elements composed of the recorded value of a physical quantity and the time node. Through the time series characteristic, it provides data query, analysis and transmission line electromagnetic environment parameter prediction function for power company, provides the basis for power grid environmental protection management and technical supervision and monitoring, and realizes the electronic management of power grid environmental protection information system.Real-time monitoring of electromagnetic environment parameters of power transmission and transformation lines, providing technical support and data support for the formulation of environmental protection policies and solving environmental disputes, and realizing information management of power grid environmental protection. It is convenient and quick to increase the grid environment monitoring node, and the networking is flexible and simple; the monitoring center has a friendly interface, which can realize multi-point control of a large number of terminals.
Current situation and prospect of air pollutant emission standards for ships
Authors: Li Mingjun , Li Yue , Cheng Jinxiang , Xu Honglei
Published: November 2019

The emission limits and measurement methods of pollutants from ship engines (China’s first and second stages) implemented on July 1, 2018 (GB15097-2016) marked the initial establishment of China’s ship air pollutant emission standard system. Based on the study of the development of China’s ship air pollutant emission standards, this paper analyzes the applicable ships and the types of pollutants controlled by China’s ship air pollutant emission standards system, and puts forward some suggestions to improve China’s ship air pollutant emission standards system.
Study of wind-solar complementary power system in zhongshan station of antarctic
Authors: Zhang Ling , Dou Yinke
Published: November 2019

Due to the environmental and transportation problems caused by conventional diesel power supply of the Antarctic Zhongshan Station,the wind-solar complementary power generation technology can not only guarantee the power supply demand but also protected the environment of the polar regions.Combined with the meteorological data of the Antarctic Zhongshan station and the data of the load electricity consumption,the system energy matching calculation is carried out,which shows that the wind-solar complementary power generation system can meet the load demand of the Antarctic Zhongshan station.Aiming at the extreme polar day-night phenomena and the perennial low-temperature environment,the energy management scheme in Antarctic Zhongshan station are proposed and a Maximum Power Point Tracking control strategy simulation experiment is carried out,the simulation results verify the feasibility of the control strategy.
Development and Application of Foreign objects Removal Device for High Voltage Transmission Line
Authors: Liang Yuhe , Yang Feng
Published: November 2019

This paper presents a device for removing foreign objects on high-voltage transmission lines in the power system.The device aims to solve current difficulties including high labor density and low success rate.Firstly, the main functional components of the foreign object removal device are analyzed, then the design innovation points and the key technology of the device are proposed. Besides, the device has been applied to the actual work site of power transmission line maintenance for the field test and data analysis. Experimental result demonstrates that it has lower labor intensity, remarkable social benefit and economic effect.
A Scheme for Image Encryption And Decryption of Chaotic System Based on memristors
Authors: Hua Honghu , Zhu Xi , Liu Haijun
Published: November 2019

In this paper, a scheme for image encryption and descryption of chaotic system based on memristors has been proposed. A memristor-based chaotic circuit is simulated and demonstrated it has chaotic characteristics. Then, a memristor-based XOR operation is introduced. At last, image encryption and decryption is presented based on these two structures. Simulation results indicate that chaotic system consisting of memristor-based chaotic circuit and memristor-based XOR operator can achieve image encryption and decryption.
A Method for Anti-electric Theft Based on User Electricity Load Forecasting and Historical Load Data
Authors: Zhang Zhi , Dong Xianguang , Liang Bo , Dai Yanjie , Chen Zhiru , Wang Pingxin
Published: November 2019

With the development of socioeconomic and the increasing demand for electricity, the electricity safety requirements are getting higher and higher and the importance of anti-electric theft has become increasingly prominent. At present, the phenomenon of electric theft is frequent, but the quality of relevant inspectors and related technologies are inadequate in identifying electricity stealing. In view of the above problems, this paper proposes a new method for anti-electric theft, which can predict the load of users. User load forecasting curve is formed[1], and combined with user history data, user forecasting load curve and industry load characteristic data, logistic regression algorithm is used to establish user electric theft judgment model and judge the possibility of user electric theft . The experimental results on the relevant datasets show that the proposed algorithm has a good effect.
Calibration for Axis Misalignment Angles between Photoelectric and Inertial Navigation System of Integrated Landing Navigation System
Authors: Zheng Hang , Wang Wei
Published: November 2019

Aiming at the photoelectric/inertial integrated landing navigation system, this paper proposes a calibration scheme for the axis misalignment angles between photoelectric and inertial navigation system. This paper expounds the calibration scheme, analyzes the influence of various error factors on the calibration accuracy in detail, and gives the computer simulation results. The simulation results show that the calibration accuracy of pitch misalignment angle is better than 30″, the calibration accuracy of azimuth misalignment angle is better than 85″. Therefore, this scheme meets the application requirements of integrated landing navigation system.
Power load prediction method based on kernel extreme learning machine with t-distribution variation bat algorithm
Authors: Qi Caijuan , Zhang Qian , Tian Xing , Zhang Kun , Tang Wei
Published: November 2019

To improve accuracy of power system load forecasting, according to nonlinearity and uncertainty of load sequence, a power load forecasting method combined with kernel extreme learning machine (KELM) and adaptive variation bat optimization algorithm (AMBA) is proposed in this paper. The model determines mutation probability of the current optimal individual according to the population fitness variance and the value of the current optimal solution and the t-distribution variation is performed on the global optimal individual, and bat individual after mutation is subjected to secondary optimization. Then AMBA is used to optimize the network parameters of kernel function extreme learning machine, so that make full use of advantages of fast learning speed and generalization ability of KELM to realize rapid prediction of load. AMBA-KLEM model is used to predict load of Ningxia Power Grid, and the results are compared with ELM model and KELM model. The results show that the model has higher load prediction accuracy.
Training Strategies for Cross-border E-commerce Business English Talents under the background of "Internet +"
Authors: Xiao Yan
Published: November 2019

Cross-border e-commerce business is an important foreign trade mode in the period of global economic integration. With the popularity of the Internet, cross-border e-commerce has developed rapidly. Cross-border e-commerce should be able to cover e-commerce and international trade, so business English talents are urgently needed. As English talents in the new situation, they should have the ability of international marketing, international trade and cross- cultural communication. However, there are many problems in the business English talents cultivation for cross-border e-commerce in China. Firstly, this paper analyses the current demand of cross-border e-commerce for professional business English talents. And then through a questionnaire survey, this paper analyses the current problems in training business English talents, and finally puts forward some suggestions.
Design of Electric Vehicle Charging Station Based on Genetic Algorithm
Authors: Hu Yilin , Qian Kejun , Gao Hui
Published: November 2019

Aimed at the design problem of electric vehicle (EV) charging station, this paper proposes an optimization algorithm based on genetic algorithm (GA) to explore the optimal design scheme. The proposed algorithm is verified by using a charging station equipped with distributed energy as an example. At the same time, the example is divided into three cases for comparison. The results show that the construction of distributed generation for charging station will have better economic benefits.
The Application of Adaptive Ant-colony A* Hybrid Algorithm Based on Objective Evaluation Factor in RoboCup Rescue Simulation Dynamic Path Planning
Authors: Lu Jingyi , Liang Zhiwei , Li Xinyu , Zhu Zijian , Wei Boyi , Fang Fang
Published: November 2019

This paper proposed an adaptive A* Hybrid algorithm combining the advantages of ant colony and A* algorithm. Improvements of the traditional ant-colony algorithm was suggested, and the Target Evaluation Factor based on global dynamic information was introduced to promote the performance of ant path decision. In additional, an adaptive pheromone updating strategy was designed to balance and speed up the convergence rate. Test results showed that this algorithm can effectively guide agents to get an optimal path to ensure the efficient completion of tasks.
Classification Algorithm of Urban Point Cloud Data based on LightGBM
Authors: Shi Xiaosong , Cheng Yinglei , Xue Doudou
Published: November 2019

In order to improve the accuracy and efficiency of airborne LiDAR point cloud data classification algorithm, a classification algorithm of point cloud based on LightGBM was proposed, and the classification effect of the algorithm on urban point cloud data was tested. In this paper, LightGBM-1 classifier was used to roughly classify point cloud data firstly. Then ground points were extracted to normalize non-ground points. After that, multi-scale neighborhood features of building points and vegetation points were extracted, and then building points and vegetation points were finely classified by LightGBM-2 classifier. The algorithm was verified by urban point cloud data, and the classification effect was evaluated by analyzing classification accuracy and time. Experimental results show that, compared with other algorithms, this algorithm can effectively improve the effect of point cloud data, and realize the effective classification of point cloud data in urban areas.
A Multi-Information Integrated Navigation Method for Shipboard Landing
Authors: Chen Y , Wang W , Meng Y , Chen J Y
Published: November 2019

This paper presents a multi-information integrated landing navigation system for ship landing. It includes satellites, pseudolites, vision and inertial navigation systems. Pseudolites and satellite systems can provide the relative positions between plane and ship, and the vision system can get the relative positions and attitude by identifying targets on the runway. The airborne inertial navigation can provide the aircraft motion information, and the data link can receive the ship motion information. INS is selected as the federated filter reference system, and the satellite, pseudolite, visual and inertial navigation information are fused by the federated filter to Provide navigation information. Through designing simulation experiment by MATLAB. Under the set simulation conditions, the lateral and longitudinal position deviation between the aircraft and the ship is about 0.1m, and the relative vertical position deviation is within 0.3m, which achieve the precision requirement of shipboard landing. The simulation experiment shows that the multi-information integrated navigation method is practicable.
Letter to the Editor: Methods for mapping quantitative trait loci in autotetraploid species
Authors: Chen Jing , Leach Lindsey J , Luo Zewei
Published: November 2019

Mapping quantitative trait loci (QTL) in autotetraploid species represents a timely and challenging task. Two papers published by Wu and his colleagues proposed statistical methods for QTL mapping in these evolutionarily and economically important species. In this Letter to the Editor, we present critical comments on the fundamental conceptual errors involved, from both statistical and genetic points of view.
Functional and Pathological Correlates of Judgments of Learning in Cognitively Unimpaired Older Adults
Authors: d’Oleire Uquillas Federico , Jacobs Heidi I L , Schultz Aaron P , Hanseeuw Bernard J , Buckley Rachel F , Sepulcre Jorge , Pascual-Leone Alvaro , Donovan Nancy J , Johnson Keith A , Sperling Reisa A , Vannini Patrizia
Published: November 2019

Judgments of learning (JOL) pertain to introspective metamemory processes evaluating how well information is learned. Using a functional magnetic resonance imaging (fMRI) task, we investigated the neural substrates of JOL predictions in a group of 105 cognitively unimpaired older adults from the Harvard Aging Brain Study. Associations of JOL performance and its neural correlates with amyloid-β (Aβ) and tau pathology, two proteinopathies associated with Alzheimer’s disease (AD) and aging, were also examined. We found that trials judged as learned well relative to trials judged as learned less well (high JOL > low JOL) engaged the ventromedial prefrontal cortex and precuneus, among other midline regions, in addition to bilateral hippocampi. In this cohort of older adults, greater levels of entorhinal tau deposition were associated with overestimation of memory performance and with lower fMRI signal in midline regions during predicted memory success. No associations with Aβ were found. The findings suggest that tau pathology in unimpaired older adults may play a role in altered metamemory processes. We discuss our findings in light of the hypothesis that JOLs are partially dependent on a process involving attempts to retrieve a correct answer from memory, as well as implications for clinical research investigating unawareness of memory performance (i.e., anosognosia) in patients with AD dementia.
Measuring Recovery in Deaf, Hard-of-Hearing, and Tinnitus Patients in a Mental Health Care Setting: Validation of the I.ROC
Authors: Roze Karin C M , Tijsseling Corrie , Rudd Bridey , Tiemens Bea G
Published: November 2019

This study was aimed at validating the Individual Recovery Outcomes Counter (I.ROC) for deaf, hard-of-hearing, and tinnitus patients in a mental health care setting. There is a need for an accessible instrument to monitor treatment effects in this population. The I.ROC measures recovery, seeing recovery as a process of experiencing a meaningful life, despite the limitations caused by illness or disability. A total of 84 adults referred to 2 specialist mental health centers for deaf, hard-of-hearing, and tinnitus adults in the Netherlands completed the Dutch version of I.ROC and 3 other instruments. A total of 25 patients refused or did not complete the instruments: 50% of patients using sign language and 18% of patients using spoken language. Participants completed the measures at intake and then every 3 months. In this sample I.ROC demonstrated good internal consistency and convergent validity. Sensitivity to change was good, especially over a period of 6 or 9 months. This study provides preliminary evidence that the I.ROC is a valid instrument measuring recovery for hard-of-hearing and tinnitus patients using spoken language. For deaf patients using sign language, specifically those with limited language skills in spoken and written Dutch, more research is needed.
Resection of a large primary left ventricle tumour by cardiac autotransplantation in a 2-month-old infant: a case report
Authors: Liu Yuhang , Wang Ning , Wen Ping , Zhou Gengxu
Published: November 2019

Background

Surgery is the fundamental method for the treatment of primary cardiac tumours. However, due to the inaccessibility of anatomy and the proximity of important structures, it is very difficult to completely resect tumours of the left atrium or left ventricle without damaging the normal tissues. Cardiac autotransplantation for the resection of cardiac tumours is carried out by taking out the heart from the body, resecting cardiac tumours, and then transplanting the heart back into the body.

Case summary

This article presents a successful case of cardiac autotransplantation for the complete resection of primary cardiac tumour in a 2-month-old infant and shares the noteworthy experience.

Discussion

Tumours located in the left atrium and left ventricle are difficult to be exposed because of their deep posterior location and proximity to important anatomical structures such as mitral valve and chordae tendineae. How to resect the tumours completely without damaging the normal tissues is a great challenge. This case proves that cardiac autotransplantation is a good solution for tumours that are difficult to be resected completely by orthotopic cardiac transplantation.
Within-Person Associations Between Attachment Security, Need Satisfaction and Psychological Adjustment in Daily Life of Older Adults
Authors: Martin Annika A , Horn Andrea B , Allemand Mathias
Published: November 2019

Objectives

Little is known about how attachment processes manifest within older adults in daily life and how these processes are associated with daily psychological adjustment. This study examined the within-person associations between states of attachment security and psychological adjustment. It is expected that this association is mediated by higher levels of satisfied needs in daily life.

Methods

Microlongitudinal self-report data were collected in a sample of 136 older adults ranged in age from 60 to 90 years (ageM = 70.45 years) across 10 days with daily morning and afternoon measurement occasions.

Results

Three main findings from multilevel analyses emerged. First, older adults showed significant within-person variation in attachment security, satisfaction of the needs for autonomy and competence, and psychological adjustment over time. Second, attachment security was positively associated with psychological adjustment within individuals. Third, both satisfaction of the needs for autonomy and competence mediated the within-person association between attachment security and psychological adjustment.

Discussion

The results suggest that attachment security is associated with the experience of autonomy and competence in daily life of older adults which in turn is related with better psychological adjustment.
The Chow Ring of a Cubic Hypersurface
Authors: Diaz H Anthony
Published: November 2019

We study the product structure on the Chow ring (with rational coefficients) of a cubic hypersurface in projective space and prove that the image of the product map is as small as possible.
Zeros of Holomorphic One-Forms and Topology of Kähler Manifolds
Authors: Schreieder Stefan
Published: November 2019

A conjecture of Kotschick predicts that a compact Kähler manifold X fibres smoothly over the circle if and only if it admits a holomorphic one-form without zeros. In this paper we develop an approach to this conjecture and verify it in dimension two. In a joint paper with Hao [10], we use our approach to prove Kotschick’s conjecture for smooth projective three-folds.