Table of Content

20 April 2014 Volume 27 Issue 2

  

Oceanographic Science, Technology and Equipment

BP neural network based seawater intrusion degree evaluation for Yellow River mouth

LI Lian-Wei, LIU Zhan, HU Li-Min, WANG Zhen-Jie

J4. 2014, 27(2):  1-7.  doi:10.3976/j.issn.1002-4026.2014.02.001

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We established a BP neural network based seawater intrusion degree evaluation model, which included 8 crypticlayer nodes and 3 layers. We trained and tested the neural network with the rank assessment criteria of seawater intrusion degree assessment index as the training and test samples.We further evaluated seawater intrusion degree for Yellow River Mouth. Results show that the simulation result of BP neural network is consistent with the expected result. Seawater intrusion degree at Yellow River Mouth is more serious.

STM32 based design of marine environmental data acquisition system

XIN Kai, ZHANG Xi-Yan, QI Sheng-Bo, CHEN Zong-Xi

J4. 2014, 27(2):  8-12.  doi:10.3976/j.issn.1002-4026.2014.02.002

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We devise a marine environmental data acquisition system. It employs a low power consumption CPU chip, STM32F207, and can automatically colllect, transfer and process marine environmental data and the posture of the carried device . It uses a standard CF card to store data. Experimental data is convenient to be read into a PC through a USB cable. Experiments show that the system is stable and reliable and can satisfy all the requirements of a data buoy.

Design and implementation of .NET and ArcGIS engine based marine environmental monitoring data analysis and evaluation system

YIN Wei-Han, BU Zhi-Guo, SUN Pei-Yan, ZHAO Yu-Hui, QI Yan-Ping, LI Hai-Tao

J4. 2014, 27(2):  13-18.  doi:10.3976/j.issn.1002-4026.2014.02.003

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We design North China Sea environmental monitoring data analysis and evaluation system with ArcGIS Engine as a core and .NET as a development platform. The system integrates a SQL server, WinForm, a key export word, etc. It can achieve such functionalities as monitoring data import and standardization, data early warning, database management, query and statistics, sea water quality evaluation and onetouch product production. Application results show that the system operates well. We employ software codes to achieve analysis functionalities of Spatial Analyst Tools. The system can significantly improve office efficiency and quality, provide an example for the development of other marine environmental monitoring and evaluation system and technical support for realtime control and rapid diagnosis of marine monitoring data.

Mooring force calculation of ocean data buoy mooring system

ZHANG Ji-Ming, FAN Xiu-Tao, ZHANG Shu-Gang, WAN Xiao-Zheng, SUN Jin-Wei

J4. 2014, 27(2):  19-24.  doi:10.3976/j.issn.1002-4026.2014.02.004

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We established the motion equation of ocean data buoy mooring system to accurately forecast the stress and movement of a data buoy. We presented the calculation method of all external loads on a data buoy and its mooring system. We also obtained the motion equation of a data buoy and the stress formula of its mooring system. We considered the impacts of ocean wave load acting on the mooring system and the wave frequency motion caused by wave load on the mooring system when calculating the external forces of the mooring system. Numerical simulation was conducted in time domain for the motion and tension of a mooring system. Results show that the approach can satisfy the required precision of buoy motion and force analysis in ocean engineering.

Contour extraction based crest coordinate collection algorithm

CUI Hao, WANG Zhong-Qiu, LIU Hui, XU Yan

J4. 2014, 27(2):  25-29.  doi:10.3976/j.issn.1002-4026.2014.02.005

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Shore station video analysis based noncontact ocean wave observation is greatly impacted by the accuracy of crest 2D coordinate in a wave image. We present a contour extraction based crest coordinate collection algorithm to compensate such negatives of traditional algorithms as poor accuracy and realtime. We also introduce a collapse function to terminate the invalid coordinate collection. The algorithm only highlights the concerned crest area and records the relationship of adjoined points when precisely collecting the 2D coordinate of every crest. It has higher practicability in relative observation technology.

Longterm characteristics of seawater salinity change in Lianyungang coastal sea area

SUN Ke-Qu, XU Xian, LI Jun, GE Xiu-Jun, MA Pei-Ming, HUANG Chen-Yang, LI Chuan-Zhu

J4. 2014, 27(2):  30-33.  doi:10.3976/j.issn.1002-4026.2014.02.006

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We employ Morlet wavelet transform to analyze the periodical characteristic of salinity change in Lianyungang coastal sea area from 1965 to 1994, Results indicate that salinity change in Lianyungang coastal sea area has periods of 14 years and 5 years for the past 30 years. Salinity mean value is 29.39. It is obvious for the periodic characteristics of salinity change.

Traditional Chinese medicine and natural active products

Application of metabonomics in security assessment of traditional Chinese medicine

WU Xiao-Min, HAN Li-Wen, YANG Guan-E, LIU Ke-Chun

J4. 2014, 27(2):  34-38.  doi:10.3976/j.issn.1002-4026.2014.02.007

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      Metabonomics, an important part of system biology, shows great potential in toxicity or security assessment of traditional Chinese medicine (TCM). This paper surveys the applications of metabonomics in toxicity impacted target organ, toxicity dosage, action mechanism, biological markers and toxicity substances of TCM. Although metabonomics is still in its developmental stage, it provides new ideas and methods for TCM toxicity or security assessment and a powerful supplement to TCM security assessment.

Research on the utilization value of Salvia miltiorrhiza with abnormal characters

LI Cui, WEI Guang-Fei, LI Jia, ZHENG Li-Mou, ZHANG Yong-Qing

J4. 2014, 27(2):  39-43.  doi:10.3976/j.issn.1002-4026.2014.02.008

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This paper addressed whether Salvia miltiorrhiza with abnormal characters had utilization value. The content of its effective components was measured by HPLC under the conditions of Diamonsil C18 column (4.6 mm×250 mm,5 μm), acetonitrile0.026% phosphoric acid gradient elution, detection wave length of 270 nm and 286 nm and flow rate of 1.0mL·min-1. Results show that Salvia miltiorrhiza with such abnormal characters as sicks and discolour still contains such active ingredients as rosmarinic acid, salvianolic acid B, tanshinone Ⅱ A, tanshinone I and cryptotanshinone. The contents of cryptotanshinone and tanshinone I in abnormal Salvia miltiorrhiza are several times than those in normal Salvia miltiorrhiza. Abnormal Salvia miltiorrhiza can therefore serve as Chinese medicine raw material with which Rosmarinic acid and Salvianolic acid B can be extracted.

HPLC based simultaneous three flavonoid contents determination for Bidens parviflora Willd.

LIU Hong-Yan

J4. 2014, 27(2):  44-46.  doi:10.3976/j.issn.1002-4026.2014.02.009

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We establish a HPLC based method for determining the contents of rutin, hyperoside and quercetin from Bidens parviflora Willd. The linear ranges of rutin, hyperoside and quercetin are 0.50~12.50 μg/mL(r=0.999 9), 0.49~12.35 μg/mL(r=0.999 8), 0.42~10.55 μg/mL (r=0.999 5), and the average recovery rates (n=3) are 99.37%(RSD=0.56%), 99.35%(RSD=0.57%), 99.68%(RSD=0.56) under the conditions of DiamonsilC18column, mobile phase of acetonitrile0.2% glacial acetic acid, flow rate of 1 mL/min and the detection wavelength of 360 nm. The method is simple, accurate and repeatable and can be employed to determine three flavonoid contents from Bidens parviflora Willd.

Article

Impact factors on cucumber callus induction

WANG Lei, ZHU Shou-Jin, SU Feng

J4. 2014, 27(2):  47-52.  doi:10.3976/j.issn.1002-4026.2014.02.010

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We address the impacts of genotypes, explants and hormones on callus induction with cotyledons and hypocotyl from three different cucumbers, Xinjin 11, Lübao and Jinbao 218 as explants and exogenous hormones IAA and 6-BA inducing callus in MS media. Results show that callus formation time and optimal hormonal concentration selection exhibit significant distinctions for different cucumber genotypes. Moreover, different explants demonstrate different optimal hormone level and callus formation. Optimal hormonal concentration of IAA is 0.2~0.3 mg/L, and that of 6BA is 1.2~3 mg/L.

Application of a preamplifier in quartz enhanced photo-acoustic absorption spectrum

CHANG Heng-Tai, CHANG Jun, LIU Yong-Ning, WANG Fu-Peng, WANG Qiang

J4. 2014, 27(2):  53-57.  doi:10.3976/j.issn.1002-4026.2014.02.011

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We devised a high impedance and high signal to noise ratio (SNR) preamplifier for such negatives as tuning fork output of high impedance and stronger adverse noise impact in quartz enhanced photoacoustic absorption spectrum (QEPAS). It employed a high input impedance operational amplifier and shorter signal line. Differential input and tuningforktandem were used to reduce noise and to improve signal strength. SNR was further increased. We precisely measured the resonance frequency and Q value of the tuning fork with piezoelectric ceramics directly stimulating the tuning fork. Experimental results show that the preamplifier has better stability, high SNR and low cost.

Mean shift based medical image tongue segmentation algorithm

LIU Jing, QIU Da-Wei

J4. 2014, 27(2):  58-62.  doi:10.3976/j.issn.1002-4026.2014.02.012

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We propose a mean shift based tongue segmentation algorithm for the characteristics of a tongue image. It initially smooths an input tongue image by mean shift method, which can effectively suppress the interference of tongue crackle and color block noise on tongue segmentation. It then implements a clustering process based on color domain and space domain proximity. A tongue image is segmented according to the clustering result. Experimental results show that segmentation results of different tongue images satisfy the diagnosis requirements of a traditional Chinese medicine (TCM) doctor. The algorithm can better implement tongue segmentation for a noise blended image.

DSP and CPLD based design of counting system of a counting machine

LIU Gai, ZHAO Yi-Qiang

J4. 2014, 27(2):  63-67.  doi:10.3976/j.issn.1002-4026.2014.02.013

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       We devise a counting system to improve the counting speed and accuracy. It employs a photoelectric sensor to serve as a detection element, the doublecore control system of DSP and CPLD, and work mode of multichannel independence and parallel data acquisition. It can realize counting prior to particle drug packaging and identify incomplete drug to some extent. The counting speed of every channel can theoretically reach 3 000 grain/min. However, the actual speed is about 1 000 grain/min. It can accurately count the drugs with diameter of 3~20 mm.

Tranfic and Transportation

Simulation of inventory theory based maritime empty containers scheduling in random condition

HAN Xiao-Long, LI Ming-Zhu

J4. 2014, 27(2):  68-75.  doi:10.3976/j.issn.1002-4026.2014.02.014

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Based on the inventory theory,we propose to set a threshold value（D，U）in a port.Therefore,when the number of empty containers at the port is less than D,keep transporting the empty containers to the port until its amount grew to D,but transport the redundant empty containers  away from the port when their number  are greater than U. We establish two cost calculation models for threshold value(D,U) setted case and not setted case with the total cost of empty containers of a sea route as a target function. We further compare the differences between two models. We calculate the total cost of a voyage for the two models by simulation. We eventually obtain the advantage of threshold (D,U) setting and analyze its sensitivity. Calculation results show that the policy corresponding to threshold (D,U) setting can significantly reduce the total cost of a voyage.

Minimum cost based transit crew scheduling optimization model

HAO Na, SONG Rui, LIU Xing-Cai

J4. 2014, 27(2):  76-82.  doi:10.3976/j.issn.1002-4026.2014.02.015

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We construct a mathematical model of crew scheduling problem based on vehicle schedule plan and the goal of minimal cost to optimize transit crew scheduling problem and improve operation efficiency and resource utilization rate. We further employ genetic algorithm and optimization software LINGO to solve the model. Analysis result shows that the model is feasible and reasonable.

Modeling of route choice behavior response of a driver to variable message signs

CAO Ya-Kang, LI Xin-Gang, JIA Bin, XIE Dong-Fan

J4. 2014, 27(2):  83-92.  doi:10.3976/j.issn.1002-4026.2014.02.016

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We make SP survey to quantitatively analyze the impacts of variable message sign (VMS) on route choice behavior of a driver. We employ the software SPSS 20.0 to analyze the data, and construct multicategory ordinal Logit model to research guidance information based route choice behavior response of a driver. We further construct a CLogit model involving VMS display condition for the route choice of overlapping routes. Calculation conclusion of the multicategory ordinal Logit model shows that the main elements affecting route choice behavior of a driver are gender, education level, car types, travel activity and VMS accuracy. Calculation results of the CLogit model demonstrate that greater difference exists between the understanding travel time and real travel time. That leads to more convergent route selection, which fails to achieve the rational distribution of traffic flow in road network.

Application of singleparent genetic algorithm in logistics riding matching optimization

LI Lin, CHEN Shou-Yuan, SHAO Zeng-Zhen

J4. 2014, 27(2):  93-97.  doi:10.3976/j.issn.1002-4026.2014.02.017

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We solve the routing optimization problem of logistics ride matching with singleparent genetic algorithm. Individual reproduction is performed by such genetic recombination as genetic transposition, genetic reversion and genetic gression. We find an optimal and the minimumcost path from all of stops after several generations of breeding iteration. Experimental results show that the algorithm not only improves vehicle ride matching success rate but also effectively reduces the total cost of vehicle operation.

Article

Existence of symmetric solutions for a kind of second-order threepoint boundary value problem on a measure chain

WU Xiang-Yun

J4. 2014, 27(2):  98-101.  doi:10.3976/j.issn.1002-4026.2014.02.018

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This paper addresses the existence of symmetric positive solutions for the boundary value problem of a kind of secondorder threepoint differential equation on a measure chain,  xΔΔ(t)+f(t,x(t))=0,t∈(0,1)∩T,x(0)=x(1),xΔ(0)-xΔ(1)=ax(ξ),Where f:［0,1］×［0,∞)→［0,∞) is continuous and satisfies f(t,x)=f(1t,x),0,1,ξ∈T,0<ξ<1,α<1/(ξ-ξ2). Existence of three symmetric positive solutions is acquired with fixed point index property.

Q-fuzzy bi-ideals of ordered Γ-semigroups

LIU Shuai, XU Xin-Zhai

J4. 2014, 27(2):  102-105.  doi:10.3976/j.issn.1002-4026.2014.02.019

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We apply the concept of Q-fuzzy bi-ideals of  Γ-semigroups to ordered  Γ-semigroups. We then prove the existence of   Q-fuzzy bi-ideals of ordered Γ-semigroups. We also address their related properties and characterizations.