Search all articles

Urban Lake is an important part of urban aqueous environment, which provides not only recreation for residents, but also high ecological service value as an ecosystem. Along with the increasing urbanization of our country and accelerating development and utilization of urban lake resource, sustainable...

The bidimensional empirical mode decomposition based on block partitioning(BBEMD) by using of radial basis function interpolation reduces the computational cost, but the blocking artefact is noticeable in the resulting mode. For alleviating the blocking artefact problem, we proposed a modified BBEMD....

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

An intelligent metal linear expansion experimental instrument scheme brings for the existed problems aimed at measurement equipment of metal linear expansion coefficient. System by the processing core STC89C52RC adopts Holzer displacement sensor SS495A to measure displacement of metal bar expansion....

In this paper, an adaptive control design and stability analysis for a class of uncertain systems with unknown models is carried out. In particular, the adaptive control effect analysis is carried out based on the assumption that the unknown system mode is estimated with the wrong mode information. Based...

The mobile drive system is an very important part of the robot, and the structural design of drive system for anti-terrorism robot will be discussed in this paper. The structural design of drive system mainly include: mechanical structure design, explosion proof technology design and power calculation....

By studying the concepts of safety quality and the safety condition of electric power enterprise, an evaluation index system for employees' safety quality of electric power enterprises is established, which includes 4 first-level indexes, 11 second-level indexes, and 47 third-level indexes. Then, the...

The feature of electric enterprise safety management capability evaluation system was analyzed according to the new study of the safety management theory and the system theory. An evaluation index system of electric enterprise safety management capability was built up based on the study of the hierarchy...

This paper introduces the noise transfer function theory overview, After improvement proposed by the suspension of dynamic stiffness to reduce interior noise opinions, In an example of a compact car, We found the front peak problem by Accelerated conditions experimental test , Using the noise transfer...

An M-ary double-layer optical camera communication (OCC) system for intelligent transport system (ITS) is proposed. According to the importance of information, the message is split into different priorities. The low-priority data is transmitted with high data rate at the upper layer in high multiplexing...

In this paper, the model of the solar shadow end plane coordinates and the measurement of the latitude and longitude, and the measuring time are established. The solution of the video shooting location and date is given by the change of the length of the shadow in the video. And the application of genetic...

Through the analysis of the water temperature distribution affected by the shape, volume, temperature of the tub and the person, this model finds the reason why it is so difficult to keep an evenly expecting temperature during bathing time. Furthermore, according to the water temperature distribution,...

Transportation facility or automotive service enterprise location is an interesting and important issue. To improve transportation efficient, lots of researchers have addressed traditional facility location allocation (FLA) problem, e.g., the FLA problem with the minimum transportation cost or the maximum...

In recent years, More and more attention has been paid to Unmanned Surface Vessels motion control field. An experimental platform for USV based on wireless communication was introduced for USV motion control algorithm experiments in this paper. The structure and implementation of experimental platform...

Comfort is an important performance index of modern cars, and thus car production enterprises are making every effort to improve the comfort level of cabs. The cab suspension system plays a key role in obstructing the vibration passed from the chassis to the cab. A simulated analysis on the car cab suspension...

The median filter will cause fuzzy problems on edge details of the image when it is used to remove noise of an image. In this paper we discuss an improved median filtering method. Firstly according to the arithmetic mean we preliminarily detect signal points and suspicious noise points in the image,...

This paper studies the synchronization problem of a class of chaotic systems. The mentioned synchronization scheme consists of identical master and slave chaotic systems. By analyzing structural characteristics of nonlinear vector field of the error system, a new approach is presented to synchronize...

Based on Kalman filtering theory in the time domain and Jordan decomposition theory for matrixes, descriptor systems can be changed into normal systems. Then an optimal descriptor Kalman filter is given. Compared with the previous results, it avoids the calculation of ARMA innovation model and white...

A kind derivative algorithm is discussed and the difference of numerical derivative and physical derivative is analyzed. What is more important is that the first step error problem is proposed and its bad affection to the system stability is shown by using a first order system as an example. Also the...

In gesture recognition systems, segmenting gestures from complex background is the hardest and the most critical part. Gesture segmentation is the prerequisite of following image processing, and the result of segmentation has a direct influence on the result of gesture recognition. This paper proposed...

Atmosphere turbulence often degrades image quality in long range infrared imaging system due to intensity fluctuations, distortion, and blur effects. In this work, long range infrared imaging through anisotropic turbulence is simulated, which combines the theoretical turbulence effects models of optical...

Currently the radio spectrum resource has become increasingly scarce. Evaluating the usage of frequency bands with existing radio services, strengthening management of allocated resource and improving the spectrum utilization have been becoming an important way of improving spectrum management level....

Financial prediction is an important research direction of financial data mining. In addition to general common characteristics, nonlinear, non-stationaryand dynamic, financial time series is also of some other characteristics, such as high noise, non-normal, rush thick tail, etc. As a result, the financial...

The rapid development of the Internet and the rapid spread of information technology accelerate the process of economic information and economic globalization, competition has changed the traditional business model. More and more enterprises are developing an online retail business. E-commerce model,...

Tourism is an association between the development of strong industry, the tourism industry as the main tourist attraction and tourism product development the merits or not is one of the key factors that influence the development of their industry, and the cultural and creative industries with its high...

With the growing strength of China's economy, the state also increased the financial institutions capital investment, but also the reform of the financial management system, however, under the old system of management institutions, due to the lack of internal control methods and awareness of risk management,...

"Thirteen Five" period is in the process of China's modernization drive critical period, but the prospect of "Thirteen Five" period, China's economic and social development is faced with complex domestic and international environment test. With the deepening of scientific and technological innovation,...

College students bears the great trust of nation and the historic mission of promoting the development of Chinese legal system and democracy, the strength of its legal awareness and concepts will directly influenced the implementation of the rule of law and the realization of national construction goals....

As today's creative industry buzzword frequently appears on various media, because of its excellent performance in economic growth and expansion of employment and other aspects of attention of the world, countries have begun to develop creative industry and its research, from theory into practice industry,...

As an organic part of the multi-level capital market, equity crowdfunding enriches the capital market level, provides possibility for multi-level financial services, promotes "public entrepreneurship and innovation", and improves financial ecological of innovation and entrepreneurship. The rapid development...

Folk dance is the working people of a nation or region homemade acted mass dance events, and is an important manifestation of the wisdom of local cultural traditions, customs and spirit of the people, it has been referred to as "ñ Dance." Important part of the intangible heritage of folk dance, are common...

As an important subject in university education, ideological and political theories course helps to improve humanism accomplishment of colleges' students and human spirit of colleges. With teaching practices, an innovative, sustainable and overall education mode come into being gradually by accumulating...

Context Since first proposed in 1923 by the famous anthropologist Malinowski has become a lot of research in the field of a very important and indispensable concept. Context The importance lies in the close relationship between it and the meaning of the works, the expression was to convey the meaning...

Adiponitrile (ADN) as a promising solvent is widely used in high-voltage system. However, its effect on the graphite is not so ideal, for the reason that thermal instability at low potential and lower lowest unoccupied molecular orbital (LUMO) energy (-0.02223 eV) of ADN result in the reduction decomposition...

Olivine LiMn0.4Fe0.6PO4 (LMFP) materials were synthesized by the modified sol-gel method with the addition of sucrose as an additional carbon source. Electrochemical properties of LMFP were advanced. The materials doped possess high reversible capacity of 107.4 mAh-g-1 at 0.2 C-rate and excellent cycling...

In this paper, glucose and RDX as raw material, alveolate graphene was synthesized by shock wave in the detonation chamber. The results of TEM, HRTEM, SEM and XRD showed that alveolate graphene was synthesized in the wall of the detonation chamber. The ratio of RDX and glucose was an important role for...