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The implied volatility of options is a key factor in judging the price trend of options and analyzing their trade, so it is very important to use a reasonable method to predict it accurately. Since the traditional B-S-M formula calculation method cannot reflect the actual changes of Tick-level granularity...

Methanotrophs are a group of microbes with methane as the sole carbon and energy source. Methane Monooxygenase (MMO) is the vital enzyme system in the metabolic process of methanotrophs. Under the action of molecular dioxygen, MMO can catalyze olefin epoxidation reaction. Fruits and vegetables can release...

Based on the random questionnaire survey of the elderly in Haikou, Hainan Province in the first half of 2018. This paper analyzes the elderly people’s willingness and its influencing factors by using single factor interaction analysis and non-sequential multi-classification Logistic regression model....

Building information modeling (BIM) is one of the most promising recent developments in the architecture, engineering, and construction (AEC) industry. With BIM technology, an accurate virtual model of a building is digitally constructed. This model, known as a building information model and BIM plays...

In order to improve the design efficiency and quality of hydraulic manifold blocks, architecture of intelligent CAD system for hydraulic manifold blocks was proposed. A component layout rule library and an oil circuit connection pattern library were established to integrate empirical knowledge, design...

With wide application of carbon fiber reinforced plastics (CFRP) in aeronautic and astronautic products, the machining of FRP, particularly by means of milling is gaining more and more attention. In order to analysis the milling mechanism and process, both macro-mechanical and micro-mechanical 3-D finite...

With the continuous development of micro grid technology, the power energy management system has gradually become a research hotspot. Micro grid energy management system can be divided into two control structures, centralized control and decentralized control.The multi-agent system is the best choice...

The previous studies confirmed that brand value can increase firm value. However, most of the literature on this topic studied the firms of developed markets, which have different institutional and cultural environment from developing markets. This paper studied the effects of brand value by using China’s...

The minimal enclosing circle is used in planning the location of a shared facility. The feature of the smallest enclosing circle problem is analyzed, and a simple algorithm for the smallest enclosing circle problem is presents. The algorithm is proved and its complexity is discussed. The time complexity...

Many factors, such as over-voltage and switch on or off, could produce FREMP which will affect the normal work of electrical equipment. High voltage disturbance signal may lead to the function degrade of equipment and the equipment will be damaged when the disturbance signal voltage exceeds a certain...

Digital office environment is the office mode based on WEB or B/S structure. Under the digital office environment, office work digitalizes and documents electronizes. Traditional paper files are easy to mildew, rot and lose, difficult to revise and inquire, and have low efficiency. Electronic records...

Photoresponsive materials have attracted much attention recently because of their potential utility in many areas such as industrial, agricultural and pharmaceutical. In this paper, several photoresponsive biopolymers having spiropyran and chitosan groups were synthesized, and the structure and properties...

The DC motor of Control system is a control algorithm for most PID. In this paper, a kind of intelligent ultra short feedback endocrine controller is designed, which is based on the mechanism of hormone secretion regulation, and is applied to the control of DC motor. The endocrine controller includes...

As an increasing number of females enter the labor market, the problem of gender inequality has raised strong interest in the management field. Although the proportion of women at managerial positions has grown in recent days, the representation of females at top management positions is still very low....

Under traditional VRF system control, room air temperature is maintained through multiple levels fan speeds (either user-specified or automatic), and regulating the opening of the electronic expansion valve based on the temperature difference between return air and the indoor setpoint temperature. This...

Multiple attribute decision making (MADM) problems are to find a desirable solution from a finite number of feasible alternatives assessed on multiple attributes, both quantitative and qualitative. In the recent years, MADM has received a great deal of attention from researchers. This paper studies the...

The credit management major (code 020306T) is a second-level discipline under the economic discipline. The core of credit management is the control of credit risk. The credit management major was first established in 2002. The first to open this major is Renmin University of China and Shanghai University...

The floating-type double-hinged wave energy converter (WEC) is developed to realize the conversion of wave energy. Based on the linear wave theory and wave-body coupled interaction, the nonlinear coupled equations of the heaving-pitching motions for the buoys are established. Under the condition of entirely...

According to the input-output table of Gansu Province in 2012, the basic input-output flow table of four departments was drawn up to analyze the input-output, mainly including forward correlation and backward correlation analysis, ripple effects analysis, etc. The research results show that the cultural...

Aiming at the characteristics of the course of Fluid Machinery and the weakness of the traditional teaching, CFD technique was introduced into classroom teaching and the fluid components were simulated by applying the CFD software. CFD technique can record and reconstruct the whole flow information of...

To explore the development process of a thick fog in Jiangyin during winter, this study employed in this research include the elements of ship-borne automatic weather station, the infrared and visible cloud images from Himawari-8, and the data of wind, humidity, pressure fields, and sea temperature in...

Given the constant availability of data from social and commercial activities, people have entered a new era of explosive growth of data. Therefore, how to effectively promote students’ development in the context of big data has become a test for higher education workers in universities in the new era....

With the rapid development of the Internet, the online shopping behavior of customers is being strengthened, attracting the attention of merchants to the e-commerce platform. It also moves on in accordance with the willingness of consumers to pay to formulate personalized prices corresponding to different...

The corrosion resistance of copper indium-molybdenum alloy layer was briefly introduced, In the acidic solution (0.5mol/L sulfuric acid solution), alkaline solution (0.5mol/L sodium hydroxide solution) and neutral solution (3.5% sodium chloride solution) in the stainless steel substrate and infiltration...

Artificial intelligence has driven innovation in the tourism industry, bringing convenience to tourism enterprises and tourists. Tourism companies have introduced chatbots and applied natural language processing technology to push the best itineraries for tourists based on their characteristics and preferences....

Relying on the advantages of the integration of art and technology of BIFT,this paper investigates the effect when we introduce the CDIO engineering quality education model into teaching and practice. The teaching system of the course focuses on “the cultivation of engineering practice ability, engineering...

The assessment of electricity trading business is an effective tool for electric market analysis and power regulation, which has an important guiding significance to the development and optimization of business. This paper constructs an evaluation index system which consists of three indices, each indicating...

This paper has analyzed status quo of drought in Lanzhou and the reason why not make full usage of the Yellow River to improve the local environment. It also includes present status of wetland, wild plants, plant, aquatic plants and wild animals in Lanzhou. Research and put forward the scheme of using...

Self-organizing dense sensor networks are expected to resolve the challenges of spectral efficiency, energy equilibrium, and device management. Because of cost and resource constraints, the sensor node is fragile to outside virus attacks. In this paper, we propose a community-based network model to depict...

Basic concept of daylight perceptive lighting is that intensity of lamps are adjusted opposite to the trend of sun light intensity, so that constant illuminance on work surface is kept. The classic and compact arrangement of daylight perceptive lighting system were discussed, the compact was recommended...

In recent years, China’s labor dispatch has developed rapidly, and some problems concerning laws, management and language have arisen. The matter of language becomes significant when it comes to the communication at work or in life in a foreign country. This paper focuses on the language problems that...

As the pillar industry of the national economy, electric power has important influence on promoting the development of national macroeconomic. Along with the issuance of "No.9 Document" in 2015, China's power industry reform has entered a critical period. Based on the prosperity indexes analysis and...

This article takes the mobile phone business of Xiaomi Corporation as the research object. Through analyzing brand positioning, SWOT analysis and marketing strategies, it systematically studies the competitive situation and development path of Xiaomi Corporation’s mobile phone business in the smartphone...

In view of the shortage of frequency electric energy meter on-site inspection, a predicting evaluation method is proposed to improve the on-site inspection strategy of the electric energy meter. This method based on the data of electrical information acquisition system extracts the relevant state variables,...

The effect of light, heat, acids, oxidant and reducing agent on the stability of carotenoids from Rhodotorula were studied, The results showed that the carotenoids from Rhodotorula are sensitive to heat, light, acid and oxidant . The absorbance at 475nm of carotenoids was weakened with the raise of temperature....

This study examines an air-pollution episode in Qingdao during 19th–26th December 2019, focusing on the physicochemical properties of different aerosol types and the evolution of their components to identify the particle sources that influenced and dominated the event. By combining air-mass back-trajectory...

Regeneration polyurethane was completely originated from waste polyurethane fibers by solid-phase alcoholysis under dynamic shearing condition, and then modified with ternary nylon. The effect of ternary nylon on the process of solid-phase alcoholysis has been investigated by infrared spectrum and torque...

Pro-Pro-[Arg11]hPTH(1-34)-Pro-Pro-Asp (hPTH') is more effective than hPTH(1-34) in the treatment of osteoporosis in our previous studies. The hypothesis that the active form of hPTH' was introduced by the excision with dipeptidyl peptidase IV (DPPIV) in vivo was validated in the present study. Following...

Composite emulsion coating with polyaniline and core-shell fluorine-containing polyacrylate emulsion (PANI/ FPAc) was prepared for protecting Q235 steel in this paper. The structure of PANI emulsion particles and core-shell FPAc emulsion particles was observed by transmission electron microscope (TEM)....

Due to the broadcast nature of wireless communications, security performance of conventional wireless relay communication system is difficult to be guaranteed. In this paper, security performance of the wireless relay communication system based on physical layer network coding (PLNC) is studied. The...

In this paper, WO3, SnO2 semiconductor materials and their monometallic and binary metal surface modification counterparts was prepared. Resistance-type Sensors were made by MEMS technology and screen printing, whose resistance signals for mustard gas detection were collected by single-chip microcomputer...

J. D. Salinger and his works have received much interest and popularity among readers and critics during the past sixty years. This paper aims to sort out the critical studies of Salinger’s works in North America and in China according to different periods divided and such a conclusion can thus be made,...

The emergence of new communication channels like microblogs, WeChat, brief videos, and live streaming has increased people's access to a wider variety of media thanks to the Internet's ongoing technological innovation. The growth of new media has prompted new demands for business marketing...

This essay aims to explore how metaphor awareness in discipline of cognitive linguistics will benefit vocabulary teaching and learning in College English Class. The notion 'metaphor awareness' mentioned here is mainly for teachers in their teaching, which implies recommendations such as teacher training,...

Electronic equipment is an important part of military weapons, and it is often stored in complex and harsh Marine environment. Corrosion problem will become one of the urgent problems to be overcome. By analyzing the regional division and influencing factors of Marine corrosion, investigating the current...

The technique of adjacent well anti-collision is one of key technologies in the cluster well directional drilling project. Based on research of the magnetic field distribution around casing string, a method is proposed to determine the distance between adjacent wells by measuring the magnetic field generated...

Taking the traditional sports health preservation methods and ideas of Longhu mountain Taoism in Jiangxi province as the research object, this paper elaborates on the traditional sports health preservation thoughts, methods and values of Longhu mountain Taoism, the differences between Longhu mountain...

Hand tracking is a challenging research direction in computer vision field. Although gesture tracking algorithm has been widely applied to the system of human-computer interaction, it is difficult to meet the robustness and the real-time requirements because of the hand lacks sufficiently rich texture...

Due to the outbreak of the epidemic, the public have a new understanding of social group buying, and accept this consumption shopping mode, and social group buying has become rapidly popular. This paper will study the development of social group buying after the epidemic and the problems it faces. Social...

In order to make better use of wave energy, based on floating wave energy device, a new asynchronous wave energy generation system is presented in this paper. Being different with traditional floating wave power gen-eration system in which the motion of hydraulic cylinder piston rod on both sides of...