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Yaguang X.,West Anhui University
Agro Food Industry Hi-Tech | Year: 2017

An increasing number of researchers have analyzed videos of badminton games given the country growing interest in badminton competitions. The development of computer technology facilitated the application of computer software in conducting video analysis. This study examines the top three world men's singles in badminton from 2015 to 2016. These games were analyzed based on the center position of athletes during competitions. The relative center position was determined based on the absolute center position and the experience of athletes. Commonly used software, such 3Dmax8.0, Photoshop cs5.0, and flash cs5.0 were used in the analysis. Photoshop was used to describe site reference lines and to draw the marking line. Flash video players were controlled through script language. The position of athletes was presented and the rules of movement were analyzed. Results show that the central position controls the movement of athletes and provides an effective reference for sports video researchers.


Zhao P.,University of Shanghai for Science and Technology | Zhao P.,West Anhui University | Xiao Q.,University of Shanghai for Science and Technology
Journal of Computational and Applied Mathematics | Year: 2016

The optimal portfolio selection problem is a major issue in the financial field in which the process of asset prices is usually modeled by a Wiener process. That is, the return distribution of the asset is normal. However, several empirical results have shown that the return distribution of the asset has the characteristics of fat tails and aiguilles and is not normal. In this work, we propose an optimal portfolio selection model with a Value-at-Risk (VaR) constraint in which the process of asset prices is modeled by the non-extensive statistical mechanics instead of the classical Wiener process. The model can describe the characteristics of fat tails and aiguilles of returns. Using the dynamic programming principle, we derive a Hamilton-Jacobi-Bellman (HJB) equation. Then, employing the Lagrange multiplier method, we obtain closed-form solutions for the case of logarithmic utility. Moreover, the empirical results show that the price process can more accurately fit the empirical distribution of returns than the familiar Wiener process. In addition, as the time increases, the constraint becomes binding. That is, to control the risk the agent reduces the proportion of the wealth invested in the risky asset. Furthermore, at the same confidence level, the agent reduces the proportion of the wealth invested in the risky asset more quickly under our model than under the model based on the Wiener process. This can give investors a good decision-making reference. © 2015 Elsevier B.V. All rights reserved.


Focusing on the study of urban space, architectural form and landscape pattern, architectural and urban design must be comprehensively understood from the aspects of society, economy, green ecology, regional culture and construction technology. With the increasing popularity of the concept of green ecology, this paper starts from the theoretical research on green ecology and green ecological aesthetics, draws lessons from relevant theories and methods at home and abroad, sets the goal of integrating natural water body, and explores the appropriate principles and countermeasures of urban design that adapts to the natural waterfront ecological environment and highlights the characteristics of green waterfront. Efforts in a few aspects have been made: a favorable waterfront landscape layout is constructed under the overall environment of Pihe River area around Moon Island in Lu'an City; a friendly green open space structure is set up; the visual space quality is improved; regional culture is blended to elevate the connotations of the natural waters; and the artistic conception of urban waterfront aesthetics is built. All these endeavors facilitate the construction of a healthy and harmonious urban environment that accords with the laws of green ecosystem, holds favorable aesthetic values and integrates nature and artificiality.


Xu Y.,West Anhui University
International Journal of Online Engineering | Year: 2017

The purpose of this study is to achieve real-time acquisition and monitoring of temperature in large-scale industrial or agricultural production scene, and timely detect abnormal temperature. FPGA chip, multi temperature sensor and alarm control module three parts consist of FPGA alarm system obtained based on multi temperature sensor. Multi temperature sensor is used for the acquisition of relevant temperature signal in the production site, and the transmission of the collected data through the way of digital signal chip to the FPGA chip for further processing. The FPGA chip is responsible for the parameter setting, the temperature signal acquisition and the threshold comparison and so on, and according to the data processing result, it can send out the normal response control signal to the alarm module. The alarm module contains the pre-warning lights and the alarm device that it can receive the control signal and realize alarm response. The results showed that the test in planting flowers in greenhouse showed that the system is sensitive in response and small in error of temperature acquisition, in accordance with the requirements for use. As a result, the system can be widely used in the temperature monitoring in the production scene, suitable for being promoted in a variety of occasions needing for monitoring the temperature.


He R.,West Anhui University
Quantum Information Processing | Year: 2015

A new algorithm is put forward to calculate the covariance matrix of an arbitrary form of Gaussian state. Through this algorithm, we find the correlation between operator correlation matrix Ω and covariance matrix V while Ω can be provided by using IWOP technique in general. As an application of the algorithm, we give the covariance matrix of n-mode squeezed state successfully. © 2015, Springer Science+Business Media New York.


Xie C.,West Anhui University | Li H.,West Anhui University | Li S.,West Anhui University | Wu J.,West Anhui University | Zhang Z.,Chinese Academy of Sciences
Analytical Chemistry | Year: 2010

This paper reports a surface molecular self-assembly strategy for molecular imprinting in electropolymerized polyaminothiophenol (PATP) membranes at the surface of gold nanoparticles (AuNPs) modified glassy carbon (gc) electrode for the electrochemical detection of pesticide chlorpyrifos (CPF). Electropolmerizable p-aminothiophenol (ATP) was first assembled on the AuNPs at the gc electrode surface by the formation of Au-S bonds, and subsequently, the CPF template was further assembled onto the monolayer of ATP through the hydrogen-bonding interaction between amino group and CPF. A conductive hybrid membrane was fabricated at the assembled gc electrode by the electropolymerization in a mixing solution containing additional ATP and CPFtemplates, and meanwhile, the CPF was spontaneously imprinted into the PATP/AuNP film. The amount of imprinted sites at the PATP/AuNP film was significantly increased due to the additional replenishment of CPF templates. The cyclic voltammetric response of the imprinted PATP-AuNP-gc sensor to CPF is about 3.2-fold as compared with the imprinted PATP-Au sensor, and the detection limit for CPF is about 2 orders of magnitude lower than that by the imprinted PATP-Au sensor. An excellent electrochemical selectivity for CPF over other pesticides was also achieved. The combination of surface molecular selfassembly with electropolymerized molecular imprinting on a larger surface area of a AuNP-modified electrode produces a high ratio of imprinted sites and, thus, provides an ultrasensitive electrochemical detection of organophosphate pesticide. © 2010 American Chemical Society.


Hu L.,West Anhui University | Yan Z.,West Anhui University | Yan Z.,Donghua University | Xu H.,Donghua University
RSC Advances | Year: 2013

Due to the specially rigid, planar and zwitterionic structures, squaraine dyes have strong absorption (ε ≥ 105 L mol-1 cm-1) in the visible to near-infrared region. Therefore, squaraine dyes have been extensively investigated from both fundamental and technological viewpoints. To present the readers a better understanding of the important dyes, in this article, we will highlight the recent synthetic developments of squaraine derivatives as a class of functional near infrared absorbing optic materials and their application in the areas of anti-aggregation, sensor, solar cell, nonlinear optics and self-assembly functional materials based on our own work during the recent years. © 2013 The Royal Society of Chemistry.


Li H.,West Anhui University | Xie C.,West Anhui University | Fu X.,West Anhui University
Sensors and Actuators, B: Chemical | Year: 2013

We report on the use of core-shell imprinted nanoparticles for the selective recognition of thifensulfuron-methyl (TFM) using an electrochemiluminescence (ECL) method. The core-shell imprinted nanoparticles were first prepared by a surface monomer-directing strategy for imprinting TFM at the surface of 3-methacryloxypropyl trimethoxysilane modified silica particles. Then, the ECL sensor was prepared by depositing the core-shell imprinted nanoparticles/chitosan composite film on the bare glassy carbon electrode surface and further removing silica cores from the composite film. The electrochemical and ECL behaviors of luminol at the sensor were investigated in the absence and presence of TFM. It was also found that the ECL intensity could be strikingly enhanced by the adsorbed TFM molecules in the composite film, which was about 2.7-fold as compared with the blank ECL intensity. On this basis, an enhanced ECL sensor is established for high sensitive and selective detection of TFM. The resulting ECL sensor shows wide linear ranges from 5.0 × 10-10 to 1.0 × 10-7 M with lower detection limit of 0.32 nM for TFM. Moreover, the ECL sensor has the advantages of high sensitivity, speed, specificity, and stability and could become a promising technique for sulfonylurea herbicide detection. © 2013 Elsevier B.V.


Li H.-F.,West Anhui University | Xie C.-G.,West Anhui University
Journal of Luminescence | Year: 2012

In acidic medium, the oxidation reaction of cerium (IV) with iodide can produce strong chemiluminescence (CL) in the presence of surfactant tween 40 as an enhancer. On this basis, a flow injection method with CL detection was established for the determination of iodide. The method is simple, rapid and effective to determine iodide in the range of 8.0×10-85. 0×10-5 mol/L with a determination limit of 5.0×10 -8 mol/L. The relative standard deviation is 2.7% for the determination of 5.0×10-6 mol/L iodide (n=11). The method has been applied to determine the content of iodide in urine with satisfactory results. Furthermore, it is suggested that the light emission from cerium (IV)tween 40 reaction is probably because of the formation of singlet oxygen 1O2 and the emitter is excited oxygen molecular pairs O2(1Δg)O2(1∑ g -). © 2011 Elsevier B.V. All rights reserved.


Li H.,West Anhui University | Xie C.,West Anhui University | Li S.,West Anhui University | Xu K.,West Anhui University
Colloids and Surfaces B: Biointerfaces | Year: 2012

An electrochemical sensor for pesticide triazophos (TAP) was prepared by deposition of gold nanoparticles (AuNPs) on carbon nanotubes (CNTs) modified glassy carbon (GC) electrode surface using a potentiostatic method, followed by electropolymerizing of o-hydroxyphenol at the AuNP/CNT/GC electrode surface in the presence of template triazophos via cyclic voltammetry. The electrochemical response of triazophos at the TAP-imprinted polyhydroxyphenol (PHP) modified AuNP/CNT/GC (PHP/AuNP/CNT/GC) electrode was investigated by cyclic voltammetry. The cyclic voltammetric response of triazophos at the TAP-imprinted PHP/AuNP/CNT/GC electrode was significantly higher than that at bare GC, CNT/GC, AuNP/CNT/GC, imprinted PHP/CNT/GC and non-imprinted PHP/AuNP/CNT/GC electrodes. The results indicated that the TAP-imprinted PHP/AuNP/CNT/GC electrode can effectively improve the reductive properties of triazophos and eliminate interferences of other pesticides. In addition, the AuNPs can strikingly amplify the electrochemical response of triazophos and improve the sensitivity to triazophos. Finally, the electrochemical sensor was successfully applied to determination of triazophos in vegetable samples with satisfactory results. © 2011 Elsevier B.V.

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