First we establish the definition of J-System, and by some actual case according to this definition to illustrate that many scientific knowledge system are J-System which is consist of three concept sets by some cognitive pattern. This paper discusses that the J system is composed of the paradigm set...

In order to clarify the failure characteristics and influencing factors of overlying soil during vertical jacking, using secondary development of discrete element program to simulate the construction process of vertical jacking, which reveals the failure mechanism, scope and development path of the overlying...

The new reform of college entrance examination has given students the right to choose subjects freely, but it puts forward higher requirements for school resources. This paper establishes the course scheduling optimization model to give the optimal courses arrangement which can help schools use their...

Domestically, virtually very little has been done in this area in the printing and dyeing production process scheduling, while some work using dispatch rule for modeling and solution is reported abroad. In this paper, a mathematical model is presented to describe the printing & dyeing production process...

The molecular model of PVDF is established by the calculation method of density functional theory(DFT). A process of applying an electric field of different magnitude to PVDF to cause a phase transition was simulated. The transformation of the molecular chain of PVDF molecules under the electric field...

The catapulting device is widely used in the aerospace field. In the process of simulated impact test of a certain type of missile, a design method of the pulley group ejection device is proposed for the test system with large load mass, large impact speed and short acceleration time, which elaborates...

In order to effectively predict high-risk students, this paper proposed a weighted voting combination prediction model based on Hadoop for high-risk students. Firstly, the design idea of the model was given, and the data of students were stored and processed by Hadoop platform. Secondly, according to...

For the problem which the subjectivity of confirming weight is too strong and depending on accurate data in VIKOR, we propose a method of ballistic missile threat assessment based on improved VIKOR. In our method, VIKOR is improved at two aspects. On the one hand, the algorithm of confirming weith is...

Considering the image distortion and the masking effect of human visual system, the Just Noticeable Distortion (JND) model is used to construct the model based on the Sigmoid function, using the Just Noticeable Distortion threshold and the absolute value of the pixel change of the image to correct the...

Based on the autoregressive distribution lag model, this paper studies the short-term power load forecasting problem in a certain area of Ningbo in summer. Firstly, the characteristics of time periodicity and temperature sensitivity of power load are analyzed. Secondly, on the basis of this analysis,...

In this paper, the two-dimensional water mathematical model of the Pearl River Estuary is established. Based on the verification of the hydrological data, the tidal current characteristics of the prefabricated immersed pipe pouring area and the floating channel are simulated, and the characteristics...

Suspension is an important part of the automobile, it is the vehicle ride comfort and control stability and other performance which have a great impact. Therefore, suspension design has always been one of the concerns of automobile designers. In this paper, suspension system mathematic model was built...

The casing of underground gas storage is under complex stress conditions because of the injection-production alternating loads and the influence coming from the intensive injection and withdrawal of injection-production wells. It is crucial for the long-term safety of injection-production wells of underground...

Aiming at the problem of pressure fluctuation in front of injector of a certain type of marine steam power plant fuel system caused by working condition change, a system optimization method is proposed, which combines the star-delta connection method of electric motor with the main pressure feedforward...

User logon failure accounted for a relatively large proportion in network fault. Therefore, it is of great significance for service providers to diagnose and locate login failures quickly. In this paper, a login fault diagnosis method based on bayesian network is proposed. Firstly the login fault events...

In order to prevent the leakage of the electromagnetic field and control the electromagnetic field within the limit of the safety limit, the electromagnetic shielding device will be installed in the coupling mechanism of the wireless power energy transmission system. The edge effect will be produced...

As an important way to absorb clean energy, micro-grid is studied in this paper. Compared with photovoltaic or wind independent power supply system, wind-solar complementary system can better adapt to the change of environment. Coupled with the regulating function of battery, wind, solar and battery...

The fuel injector of marine auxiliary boiler burner was took as the research object in this paper. Firstly the UG NX_8.5 software was used to establish the 3D model of the boiler injector and related components, then the virtual assembly and disassembly system of the boiler injector was researched and...

As a new generation of light source, the organic light-emitting diode (OLED) has many advantages, and Apple has adopted OLEDs display on the latest version of mobile phones. However the low light output rate is an important factor restricting its performance. In this paper, FDTD solutions software is...

Path planning has made great progress in recent years, for which more and more autonomous algorithms are proposed. Dynamic target tracking plays very important role in path planning, but most research of whom are related to the hardware that to realize it. There is very few research focus on the dynamic...

Text mining, intelligent algorithms and knowledge maps are the research frontiers and hotspots of current scientific knowledge discovery. However, there is currently no theoretical basis for such research—for example, the theoretical framework for the structure of scientific knowledge systems and the...

The original differential evolution algorithm (DE) is a single-population differential evolution algorithm (SPDE). DE converges very quickly, and takes the advantage of robustness. The improved DE has a better performance, but there are premature problems in optimizing complex problems. The multi-population...

The Songliao Basin, located in northeastern China, is rich in organic matter and develops organic shales deposited in continental environments. However, previous studies have mainly focused on marine shales, and there has been little research on terrestrial shales. The complex pore structure characteristics...

With the development of the Internet, informatization has penetrated into all walks of life. The general-purpose parts manufacturing enterprise is no exception, and its production mode is also undergoing tremendous changes. The main performance is the development of customized production to the network....

Multiobjective optimization problem Portfolio is a hard–decision–making problem in investment management. With respect to how to obtain the multiobjective candidate decisive solutions for Portfolio, a multiobjective optimization method M–PBIL (Multiobjective Population Based Incremental Learning) to...

Rescaled range analysis is a new method to reveal the natural self-similarity. Wavelet analysis shows the frequency characteristics on whole frequency domain, also can give the overall characteristics on time domain. Fengqiu is selected as the representative study area of lower Yellow River. Predicting...

This paper considers a repairable load-sharing parallel system with two different components which are distributed as exponential distribution. The availability function and reliability function of the system are calculated and some special cases are discussed. Finally, we derive the bayesian estimator...

This paper focuses on synthesis and analysis of the algorithms for estimating the time of arrival and the duration of a narrow-band radio signal with arbitrary-function envelope and unknown initial phase, such algorithms provide overcoming the prior parametric uncertainty in different ways. We tested...

In order to study whether different concrete aggregate sizes have certain effects on the mechanical properties of concrete, three specimens with different concrete aggregate sizes were scanned by low field nuclear magnetic resonance testing method after fatigue test loading in this paper. By testing...

Fully homomorphic encryption allows for data to be stored and processed in an encrypted format, which gives the cloud computing provider a way to process data without even knowing what the data is. At present, most identity-based homomorphic encryption schemes from ring learning with errors have focused...

This paper studies key technologies of charging interoperability test and evaluation for electric vehicles, analyses the standard system and test methods of charging system for electric vehicles in China. Aiming at the charging interoperability problem since the release of the new national standard for...

This study aims to predict the participation pattern related to the social science programs within a high participated higher education system. Taking the expanding higher education system in Taiwan as an example, we collected the series data with student numbers in social science programs and total...

The return rates of investments in education have been estimated for a long time. The related advantaged linkage between extending higher education participation and economic growth has been spreading around the world. While the global expansion phenomena in higher education are not persistent to their...

Stored grain pests detection is essential for grain management. In this paper, we have proposed a machine learning method for stored-grain pest detection. We focus on crustacean pests detection using SVM. The 20 pixels width and 20 pixels height pests and background images are directly utilized for SVM...

VMS (Variable Message Signs), as an important part of traffic guidance system, is mainly used in road traffic to guide drivers to choose the optimal path and improve the efficiency of road network operation. This paper establishes a passenger mode selection model with or without information and use the...

With the advancement of air transport industry, airline travelling is becoming increasingly prevalent in recent years. Flight delay, however, has been a headache and costly issue for both air companies and travelers, leading to inconvenience in our daily life. We can't help asking: what's the major cause...

Ultrashort pulse has important applications in supercontinuum spectrum, frequency comb generation , bioimaging and so on, therefore it becomes more and more popular. Self-similar pulse can be compressed and the high quality and high power ultrashort pulse can be achieved. In this paper, we research the...

Based on the introduction of face recognition technology and hair style recommendation algorithm, this paper proposes the overall design and implementation of the Hair Recommendation System Based on Face Recognition platform. The software comprehensively considers the hair length, hair volume, face shape...

In this paper, a silicon-based fully connected optical neural network (ONN) is designed, which can be use to image classification and recognition with accuracy greater than 97% . A fully connected neural network is constructed. One layer model has been used in chip design. Chip simulation shows accuracy...

Previously, the authors proposed an algorithm for detecting point objects in an image, applying the Harris corner detector. However, this algorithm has one drawback, which is associated with high computational complexity and the slight ability to use this approach in real-time video processing tasks....

In this paper we describe a software implementation of computer vision methods for highlighting contrasting objects in noisy images. A user-friendly graphical interface is developed. The software program is intended for reading video sequences files, their processing in order to seek and recognize objects,...

Based on the strategic planning of Shanghai Metro Smart Station and the main problems existing in the Automatic Fare Collection System of rail transit, the application requirements of speech recognition technology in the Automatic Fare Collection System of rail transit are put forward. On the basis of...

The shipment of offshore oil platform is a very important part of the process from construction completed to the offshore installation. As the large marine module moves in the process of the skidded loadout, Different positions of wharf produce different degrees of deformation. We need to improve the...

Aiming at the problem of shear damage of shearer ranging arm caused by thermal load and force load, the ranging arm shell of the drum shearer is taken as research object, the mechanical properties, temperature field distribution and thermal characteristics of the ranging arm shell are carried out. Based...

The paper discusses the possibility of developing a hybrid adaptive resonance theory neural network architecture that can model the dynamics of speech perception and production starting from the sound constituents of phonemes. The architecture is composed of an adaptive resonance theory network coupled...

The consensus problem about continuous time multi-agent system (MAS) with semi-Markov (SM) switching topologies is studied in this paper. Switching topology whose sojourn-times satisfy a general probability distribution is a general Markov renewal process. The problem about consensus is considered that...

With the rapid arrival of the information explosion era, the amount of data stored in a single table of an enterprise information management system is getting more and more common. Therefore, efficiency optimization of SQL based on the massive data is an essential task to break the bottleneck in current...

Four-wheel steering system can comprehensively improve the steering performance of the car. Compared with two-wheel steering car, four-wheel steering car improve the steering performance of the car at high speed. In this paper, the frequency domains corresponding of the vehicle steering system were obtained...

This paper proposed a 3D source generation method for generating elemental image array (EIA) of integrated imaging. The proposed method can break through the constraints between parameters of traditional integrated imaging record device and display device, and allow to obtain a new set of EIA suited...

Renewable energy generation (REG), including wind farms and solar plants, are continuously installed in power systems with a relatively high speed. Due to large portion of installation and intermittent characteristic, fully absorbing REG has become a troublesome problem when under certain regional grid...