Search all articles

We investigate the particle trajectories in an irrotational shallow water flow over a flat bed as periodic waves propagate on the water’s free surface. Within the linear water wave theory, we show that there are no closed orbits for the water particles beneath the irrotational shallow water waves. Depending...

The Banach fixed point theorem is used to prove the existence of a unique( w) periodic solution of a new type of nonlinear impulsive delay differential equation with a small parameter.

The human health risk assessment associated to the human exposure to polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and metals for the population living near a hazardous waste landfill (HWL) in Catalonia (Spain) is here presented. In summer of 2009 and 2010, two monitoring campaigns were...

The paper is concerned with measuring of risks in managerial decision-making. It builds upon the uncertainty of economic information, which is converted into the concept of risk expressed in terms of probability and using confidence intervals and standard deviations of the predicted quantities. The paper...

Breast cancer is a threat to women’s health. Female adolescents need to be vigilant. This study aimed to analyze the relationship between dietary patterns, sedentary lifestyles, and breast cancer awareness among female adolescents. A cross-sectional approach with stratified random sampling was used....

During the 6th century CE, the construction of Buddhist cave-temples has been flourished in China despite the rapid regime change that took place in both the north and the south. The Northern Xiangtangshan cave temples as royal grottoes of the Northern Qi Dynasty (550-577), is a locus preserving an important...

Recently, Holm and Ivanov, proposed and studied a class of multi-component generalizations of the Camassa–Holm equations [D. D. Holm and R. I. Ivanov, Multi-component generalizations of the CH equation: geometrical aspects, peakons and numerical examples, J. Phys A: Math. Theor.43 (2010) 492001 (20pp)]....

We consider a fragmentation-coagulation equation with growth, where the nonlinear coagulation term, introduced in O. Arino and R. Rudnicki [2], is designed to model processes in which only a part of particles in the aggregates is capable of coalescence. We introduce various growth models, describing...

Concrete is a type of building structure material, both buildings, bridges, and roads. Concrete is a construction material obtained from mixing sand, gravel, or crushed stone, cement, and water. To improve the properties of concrete, several kinds of additives that have certain functions are added to...

In this paper, the particle emission characteristics of vegetables, meat and vegetables plus meat were studied when stir-frying was used as cooking aspect. The particle size, quantity and distribution of different food materials under the same cooking conditions were analyzed through field tests. The...

The shaping of the rural cultural tourism brand is an important way for the development of the rural tourism industry, and it is also an important measure for the implementation of rural revitalization. Taking Haiqing Tea in Qingdao Haiqing Town as a case, this paper constructs an evaluation model for...

The Covid-19 pandemic have impacted the instability of economy, especially for Micro, Small and Medium Enterprises (MSMEs). These SMEs have been experiencing a decrease in sales turnover. For this reason, MSMEs need to improve their strategies to be able to survive in the midst of this pandemic and to...

This research is aimed to find out the role of peer relationship during covid-19 pandemic. Data were collected by examining the primary sources of book and journal references related to the research. The analysis was done by connecting the problems of the concept with relevant theories. The result of...

The Indonesian government’s strategy to deal with the drastic decline in the Indonesian economy is to increase investment and domestic consumption. One of government’s modes to increase investment is that the government and Indonesian House of Representatives approve establishment of omnibus law, namely...

We propose all-solution processed white quantum dots light emitting devices (WQLEDs) based on CdSe/ZnS Quantum dots(QDs)/polymer hybrid emissive layer which was red, green and blue (RGB) QDs and blue emitting homo-polymer blending. The proposed WQLED showed higher brightness, external current efficiency...

Vocational ability is the practical requirement of tourism industry for tourism talents. The purpose of practical teaching reform of tourism management major is to promote vocational ability. On the basis of analyzing vocational ability that university graduates of applied tourism management should have,...

In this paper, firstly, application areas of Operations Research are introduced. Some computer tool-kits used to solve OR problems are outlined, together with some programming languages, which can be used to model and solve the optimization problems. Secondly, an optimization programming language-IBM...

With the rapid growth of aging population in our country, the socialization of endowment insurance is particularly important. The main problems that endowment insurance socialization faces are: the large salary gap between civil service, public Institution and business company; a considerable distance...

In the classroom teaching, the knowledge cramming teaching mode is boring. And the task-based teaching activities emphasize that the students should "learn by doing", and the teachers should design specific and actionable tasks based on the classroom activities. In this way, the students could complete...

In this paper, the problem of path planning existing target movement in the flight is studied. Firstly, according to the terrain threat, the threat field is created by using the Voronoi diagram method, and the total cost of the track is established. Then, the problem of the traditional path planning...

The paper studied on the share of GDP by the data from 1994--2012 .It is possible to identify three main structural changes in China's economy: the primary (i.e. agriculture), secondary(i.e. industry) and tertiary (i.e. service). China is in the middle stage of industrialization and transforming from...

Solar power has become one of the most important renewable resources due to the energy crisis recently. An intelligent solar LED lighting driver system based on embedded technology was designed to make full use of the green energy. Electricity which was detected real-timely was generated by solar cells....

With regard to two dimensional Direction-of-Arrival (2-D DOA) estimation in sparse array, this paper presents a singular value threshold based estimation of signal parameters via rotational invariance technique (SVT-ESPRIT) algorithm. Firstly, a signal model of DOA estimation based on matrix completion...

Up to date, the Internet industry has done a lot of research on malware analysis, which brings in effective malware detection. However, in terms of familial communication feature extraction and detection, a very mature product has yet to be seen. Given this situation, this paper tries to establish an...

As a form of culture, the campus came along with the emergence of the school. It is a comprehensive, multi-formed and multi-layered cultural phenomenon and a part of social culture. An increasing number of educators have realized that campus culture can become an important educational force and an important...

Collaborative filtering is a recommendation algorithm which is used in personalized system. To solve the problem of low accuracy caused by sparse data in the user-item matrix of traditional collaborative filtering algorithm, this paper presents a hybrid algorithm. Firstly, it uses the data based on the...

Assembled monolithic metro station is a potential kind of structure technique to solve a series of problems caused by the cast-in-situ concrete technique used in the traditional construction way of metro station. Seismic properties of this underground structure are modeled and studied based on the response...

To improve the efficiency of teaching world outlook and outlook on life, This paper concluded by the experience summary, investigation method and literature method. Firstly, the educators should reinforce their own education of world outlook and outlook on life; secondly, improve the communications between...

The encouragement and retention is very important for the sustainable development of Chinese private higher education institutions and the designing a suitable salary system can achieve this goal. In this paper, we summarize the problems in these institutions and then propose a design of salary system...

“Mianrenlang” as a form of colored sculpturing is a very popular folk art, and it features refined techniques and vivid characterization. Among the multiplicity of schools in this line of art, it is unique and has been known at home and abroad before the liberation of China. This paper analyzes the techniques...

The purpose of this paper is to introduce a blind location tracking system which can be used by the family to keep track of the blind. The whole system consists of three modules, ARM development board, 3G wireless communication module and a smart phone. The important steps in this study is to transfer...

Nowadays, there are more than 1200 free trade zones throughout the world varied from different factors such as geographic location and economic policy. The functions of the global free trade zone have developed significantly from only traditional export and re-export trade to finance, science and technology....

In order to obtain the foamed ceramic trapping efficiency on soot, a soot trapping installation was designed, made test scheme of soot trapping according to ELR test cycle. Through the analysis of test data, the conclusions are as follows: the trapping performance of 25 PPI foamed ceramics is obviously...

To linearize the several commonly nonlinear function by using variable substitution method, using the least square method and the total least squares method to observed curve fitting data after linearized the function, results show that the fitting precision of curve function that use the total least...

In this work, the direct precipitation method was used to generate magnesium salt Mg(OH)2, the process of preparing MgO crystal by calcining Mg(OH)2 in three stage temperature was studied, and MgO crystal was characterized by scanning electron microscope and XRD. On this basis, the energy band structure...

Research on owner's claims is insufficient in constructive engineering field, the composition and calculation way of the delay compensation is still not clear. Firstly, make definition of the delay compensation and its character. Secondly, analyze the reasons of delay, make specific division on the composition...

The article investigates, on the foundation of eco-philosophical approach, the concept of ecology, in general, and the perspectives of its implementation in the sphere of culture researches; it analyzes the main approaches in ecological methodology. The authors conclude the ecological aspects of culture...

This paper explores the aerodynamic performance of an inflatable wing in aircraft using both theoretical and experimental methods. The theoretical analysis is based on inflatable structures and the existing simple pressure vessel equations for the necessary structural analysis. The present work also...

The purpose of the article is to give an overview of A. Thackeray's oeuvre and show her in her literary guises an essayist, author of fiction and a historian of literature. Special attention is paid to her major works,"The Story of Elizabeth," "Out of the World," "Miss Angel," and "A Book of Sybils."

This paper defines the concept of the two kinds of development paths of the maker space, which are the "Unipolar" mode and "Bipolar" mode. And then based on the comparison of the advantages and shortcomings between them, the conclusion is made that the maker space should take the "Bipolar" development...

The expected payment of making loan to SMEs for commercial bank is jointly determined by interest rate and the probability of enterprise's repayment. This paper firstly analyzes the effect of loan interest rate on enterprise's risks on the basis of constructing game model of the loan relationship between...

In a decentralized supply chain with an upstream supplier and a downstream platform, the supplier sells a product to a stochastic isoelastic demand market through a platform. The supplier considers to make R&D investment to reduce its production cost, and hence the supply chain becomes more cost efficient....

With people's long-term exploitation, reserves of fossil fuels are continuously reducing, then in order to meet demand of social development for energies, developing renewable clean energies has attached with more and more importance. Biomass energy is renewable and environmentally friendly, so it has...

This paper aims at studying the legal issues of rural financial supervision system in China, and tries to solve the problems. For this objective, this paper mainly analyzes the reality demands of rural financial supervision system, to demonstrate the significance of perfecting the supervision system....

The study analyzes the cases of biochemistry open online curriculum construction in local universities, proposes the specific content, implementation plans, security system and significance of biochemistry open online curriculum construction in local universities. The study provides references for biochemistry...

Ethyl 4-hydroxy-3-methoxycinnamate was synthesized by reaction of ethanol and 4-hydroxy-3- methoxycinnamic acid using an efficient cation-exchange resin as catalyst under microwave irradiation. The catalyst activity was investigate by single factor experiments. The reaction conditions - amount of catalyst,...

In this paper, we conduct research on the applications of parallel genetic algorithm and optimization theory in the enhancement of network security. As the using range of the world's biggest information network, the Internet itself agreement the openness of great convenience to all kinds of computer...

In order to improve the level of the meteorological administration in the province, the electronic government affairs office and the government management in the network information system are standardized. The platform integrates the multi-tier architecture, supporting WebService, SOAP, XML and other...

Thermoelectric effect or Seebeck effect provides a means by which thermal energy can be converted into electricity directly. Voltage appears between two different types of materials (Conductor or Semiconductor) that are joined together and its junction is heated. While most efficient materials are semiconductors,...

The vehicle monitoring system is to use GPS technology to locate the vehicle, the vehicle information through the communication network back to the monitoring center, monitoring center and then use GIS technology to analyse the vehicle information, the vehicle is displayed on the electronic map, and...