Search all articles

A heat flux meter calibration system composed of a vacuum cryogenic container, a blackbody furnace and a set of T-type thermocouples measurement system is introduced in this paper. Primary purpose of this system is to calibrate specific heat flux meters applied in spacecraft thermal ground tests within...

A method for constructing regional 3D formation pressure based on logging data was established in this paper. It aims to deal with the problem that constructing regional 3D formation pressure in the block which is short of the seismic data or has poor quality of seismic data. To begin with, logging data...

China's capital market is booming in recent years. Large numbers of starting-up companies are showing up, which attracts both domestic and foreign venture capital firms. This paper investigates the impact of venture capital investment on the impact of portfolio companies. The innovation and significance...

Energy system is the largest source of carbon emissions in a country or region. Since China's economic increases rapidly these years, it also brings the growth of energy consumption and carbon emissions. This paper indicates an index decomposition analysis to evaluate the carbon emissions from industrial...

Current Codonopsis cordifolioidea products are mostly its crude extract, which is of low technology content and low added value, and studies on the active ingredients of Codonopsis cordifolioidea are very limited. To promote industrial development of Codonopsis cordifolioidea product and to increase...

Being increasingly common in our lives, mobile networks have created a mobile, convenient, and individualized environment for microlearning. This transformation has caused change in the format of learning resources made available through micro-courses and MOOC (Massive Open Online Courses) so that they...

This paper studies the effect on the Augmentative and Alternative Communication (AAC) System for communication ability of autistic children. Procedures and Methods: Selecting five autistic children as research subjects, and the single subject experimental method was used to train subjects with the AAC...

With the elimination rate of mechanical products is getting higher and higher, it has become a huge problem for manufacturing enterprises to resourcefully dispose the used mechanical products. In order to optimize the resource utilization of the used components, a decision-making model for determining...

The production process of aggregate industrial is monitored by the identification of the digital. In the video, the digital character whose size is less than 12 15(The width of the digital image is 12 pixels, and the height is 15 pixels.) is defined as the small digital. The recognition effect is evaluated...

With the definite labeled samples, it is difficult that avoid the curse of the dimensionality for the accurate and efficient classification of hyperspectral images. It is necessary that reduce the dimensionality of hyperspectral images. Therefore, Polymorphic Ant Colony Algorithm (PACA) based band selection...

Stem water content is an important index of plant water balance. A new method based on changes in ultrasonic properties of stem was used to monitor stem water content in this paper, because the propagation of ultrasonic pulse echo signal and its attenuation characteristics in the material are closely...

Pyroelectric infrared (PIR) sensor is low-cost, low-power small component commonly used only to trigger alarm in presence of humans or moving objects. PIR sensors are widely used as a simple, but reliable. In this paper, we present a novel pyroelectric sensor node, feature extraction method and human...

Horseradish peroxidase (HRP) is widely used in biological engineering, wastewater treatment, enzyme-linked immunosorbent assay and other fields. It is great significance to study its enzyme properties, stress resistance and protective agent. In order to provide good quality HRP, and protection method...

With the rapid development of new technologies and new building materials,new network floor as a type of new building materials has been widely used in ground projects, owing to its wiring flexible, simple and practical, easy maintenance, and environmental friendly features. However, there are problems...

The Biliuhe reservoir, which is one of the most important water sources in Dalian, is the "source of life" of Dalian. To explore the characteristics of heavy metal pollution in Biliuhe reservoir, the potential ecological risk of these heavy metal elements were evaluated by two methods, i.e. geo-accumulation...

On the base of connotative definition and theoretical basis, the initial measurement project of develop Innovation team leader leadership behavior scale refer to scales of scholars both at home and abroad, use the combination of quantitative and qualitative methods to select measurement project. The...

Dissolved organic carbon (DOC) loading from lands to rivers in response to rainfall events are the major carbon sources to aquatic ecosystem. We used high-resolution measurements to determine the runoff exports of DOC from the Chippewa River and watershed which was largely dominated by agricultural land-uses....

The volatile constituents in banana flowers and banana bracts were analyzed by gas chromatography-mass spectrometry, coupled with headspace solid-phase microextraction. A quantitative analysis in percent was performed by peak area normalization measurements. 31 compounds were identified in banana flowers...

Nitrogen-footprint is a new method developed in recent years to measure the impact of reactive nitrogen produced by human activities on the environment. Livestock-product nitrogen-footprint, which is based on life cycle assessment theory (LCA) and nitrogen footprint, is used to define and measure the...

Based on the data of a arch bridge that lready built up, the finite element analysis model is established by finite element analysis software called Midas Civil. The buckling mode and buckling characteristics of the bridge are analyzed. The following operations changes are performed: the width of the...

The paper studies the industrial chain and the food security of China. It constructs an index system for estimating the food security of China during the period of 2006-2015. The empirical result indicates that during that time the condition of China's food industry develops from basic security to insecurity....

We adopt suitable numerical method to study the solitary waves of nonlinear Dirac equation in complex system. In some conditions, using nonlinear Dirac equation, we can better describe the macroscopic electrical phenomena and features generated by large amounts of electrons. As a result, we found the...

This paper designed a new structure in order to reduce the seismic damage to buildings. In this paper, basic elements, connection methods and structure relations of the self-centering rocking wall structure were introduced. A series of characteristics, such as high prefabrication degree, replaceable...

In the analysis of large structures, usually finite element model according to the blueprint, the finite element model thus created often fail to reflect the true state of the actual structure. It is necessary to establish the finite element model is corrected. Typically, finite element model updating...

With the development of transport, compared with ordinary cable-stayed bridge cable-stayed bridge because of its convenience, appearance, economical characteristics of the construction, in the construction of roads, bridges in the city has been rapid application, but because of the structural rigidity...

Medical Imaging contains extremely rich information about the internal body of a patient in clinical diagnosis, new technology research and medical treatment, medical education and training as well as for the treatment of patients having an increasingly important role. Based on the medical imaging target...

This paper takes listed companies as objects of study, building recognition the model of accounting information distortion in listed companies and putting forward selective methods of sample indexes of accounting information distortion recognition research; and on the basis of factor analysis, this paper...

with the quick development of express industry, the courier needs to safely and quickly send things to customer house. As for customers living in the high building without elevators, it is very dangerous for courier carry large-scale things such as refrigerator, TV sets to upstairs and downstairs, which...

With the rapid development of electronic technology, household devices have been developed to automatically sense environmental changes by automatic sensing system. Smart home, the trend of future lifestyle, has been payed specially attention both in academia and industry. Smart home system covers the...

In many industrial fields, there always exists mechanical regular movements, for example, the movements of reciprocating pumps in an oil field, which brings limitation for the detection. The tranditional methods including background subtraction cannot be used directly. In order to fit the scene with...

At present, digital learning terminal has larger impact on people's lives and students learning, and is likely to become more mature in a short period of time in the future. New digital terminal is built on the basis of reading. It is a dedicated terminal which is interactive, relevance, openness and...

Music therapy based on computer technology has now become a popular way of psychological disease treatment. The treatment's main medium is music signal. Send music signals through computer, and then pass it to psychological consultant to make him get some energy to change his state of body and mind....

In wireless sensor networks (WSNs), although there are many existed schemes for the local eavesdropper. However, a global eavesdropper who is well-equipped, highly motivated and has the ability to compromise node can make those method invalid, so that those existing techniques can't be against such attacks....

To obtain more accurate results of optimization calibration, an improved self-adaptive bat algorithm of camera calibration was proposed. Firstly, step parameters were set adaptively so that the objective function could avoid local minima. Secondly, the improved bat algorithms used in non-linear camera...

Identity authentication is a crucial security issue in wireless sensor networks, because wireless sensor nodes are typically deployed in an unattended environment, leaving them open to possible hostile network attacks. We propose a new identity authentication scheme based on the behaviors of node in...

The paper conducted a comprehensive scoring and ranking on the public welfare investment value of all the universities and colleges in America through establishing the comprehensive evaluation model. Firstly, those universities and colleges with insufficient information disclosure were removed from the...

Clustering Algorithms has been widely used in Ad hoc network with its ability to construct network quickly, conveniently and flexibly and without the need of default network infrastructure. In this paper, Firstly, some shortcomings of the typical algorithm AOW (adaptive on-demand weighted algorithm)...

With the rapid development of Internet, the search engine becomes an important tool for searching information gradually. In order to choose an appropriate and reliable search engine, a research on search engine evaluation has been a hot topic. In this paper, we adopt a fuzzy comprehensive evaluation...

With the rapid development of the Internet, artificial intelligence has gain widespread concern. Under the background, as one closely related discipline sentiment analysis's relevant research work have also been expanded. First, the paper analy existing text sentiment analysis method, compare the effect...

Dealt with the deficiency of single creature feature classification, classification methods of gait and facial side integrating at the feature layers are brought forth to improve the identify classification rate with long distance. This paper respectively has feature extraction and dimension reduction...

Traditionally ,pedestrian counting is a manual process. It requires a lot of manpower and material resources, and also generates the possible human error. Therefore, the reality in many cases are in urgent need of automatic pedestrian counting. The most widely deployed methods utilize laser sensors and...

Development of NC system HMI requirements, construction and development of the numerical control system human-machine interface system based on the AM3352. WinCE system, introduced in Qt language design and development method of embedded numerical control system human-machine interface. Design of human-machine...

The control problems of quad-rotor flight such as under-actuated control, strong coupling were analyzed. With a simplified dynamic model of quad-rotor based on Newton - Euler equation, a double-loop PID controller which consists of the inner attitude control and out position control. According to the...

For the purpose of this article, there is a huge amount of work in feature extraction, selection and other aspects using traditional supervised machine learning methods, and features for different applications often required different scenarios which need to manually design, but with the final result...

The traditional management methods of electrical and electronic laboratory have not satisfied the development of application-oriented university. To educate student comprehensive quality and creation ability, improve the quality of experiment teaching and increase the working efficiency for lab managers,...

Through the J City water supply network hydraulic model, QF pumping station optimization scheduling scheme is designed by genetic algorithm. And analyzing the working days and weekends in different working conditions. After the implementation of the optimal scheduling scheme, the power consumption of...

WNW7.0, software for water distribution analysis and design, is used to establish the hydraulic model of water distribution system in a northern city of China, and to analysis the changes of pressure and water quality in the water distribution system after applying single DBS and double DBS. The results...

Since the theory of aircraft engine electrical system was more complicated and difficult to master for maintenance support personnel, a novel scheme of simulation system design for maintenance training was proposed. The mechanical frame of the system was based on the original aircraft engine and electrical...

put forward an agreement of safety range query that possesses privacy and completeness protection aiming at low-energy and high-privacy protection required by range query in two-level wireless sensor networks: SPQ(Secure probabilistic range query). SPQ consists of technologies like data encryption, prefix...

There are many different kinds of machine element, with professional development of industrial production, only a few machine elements needed by factories are for their own production, most are needed to be purchased. Using purchase quotation system for machine element is an effective mean to ensure...