bluuebunny/crossref_metadata_2025 huggingface dataset:
Corrosion Inhibition Mechanism of the Inhibitor in Sedimentary Water of Storage Tank by AC Impedance Method
Authors: Zhou Yong Zhang , He Xiao Wei , Chen Dong Sheng , Liu Min , Yang Chun Yan , Wei Wu Ji
Published: March 2013

In order to study the corrosion mechanism of corrosion inhibitor on Q235 steel in tank sedimentary water, we prepared the simulation solution of sedimentary water which cintained : C1-10.0 g/L, SO42-1.0 g/L, HCO3- 0.75 g/L, Ca2+ 0.35 g/L, Mg2+ 0.2 g/L, according to the ion concentration under the condition of severe local corrosion. then the corrosion inhibitor was added into the solution, and the ac impedance was studied for different corrosion inhibitor by using the CHI660C electrochemical workstation. The results showed that when the zinc chloride compounds with ATMP (15:10), the high frequency area of ac impedance spectrum diagram is single capacitive reactance arc, and the radius of capacitive reactance arc existed concentration-dependent extreme behavior, which indicated that the adsorption film covering the metallic surface reduces the corrosion rate of metal; the radius was pretty small when only the zinc chloride or ATMP was added into the solution. When the compound ratio was 15:15, the radius reached the maximum, the adsorption resistance became bigger, and the adsorption film had good compactness thus the metal was not easy to be corroded. When Zinc chloride, ATMP and HEDP were compounded with 70 mg/L in total, a capacitive reactance arc appears in the high frequency area and a diffusion tail in the low frequency area, when the ratio was 15:7:3, the radius was the largest, and the performance was best.
Exhaust Emissions of a Diesel Engine Fueled with Soybean-Oil-Methyl-Ester-Diesel Blends and their Fuel Properties
Authors: Song Jian Tong , Yao Jv Biao , Zhu Chun Hong
Published: March 2013

Biodiesel has been gaining worldwide popularity as an alternative energy source because of its many benefits. In order to optimize the application of biodiesel the low-temperature fluidity, pulverization, evaporation, invariability, erosion capability, cleanliness and mutual solubility of the low blending rate soybean-oil-methyl-ester biodiesel-diesel blends were compared and analyzed. Then the engine tests have been carried out with the aim of obtaining comparative measures of emissions such as CO, smoke density, HC and NOx to evaluate and compute the behavior of the diesel engine running on the low blending rate biodiesel-diesel blends. The experimental results show that the low blending rate biodiesel -diesel blends conform to the standard GB252-2000 of China. Compared with the original diesel engine, the smoke, HC and CO emissions of diesel engine fueled with low blending rate soybean-oil-methyl-ester decrease, but NOx emissions increase.
Nd 3+ Substituted Nanocrystalline Zinc Ferrite Sensors for Ethanol, LPG and Chlorine
Authors: Vasambekar Pramod N. , Shinde Tukaram J. , Gadkari Ashok B.
Published: March 2013

Nd 3+ substituted zinc ferrites with chemical formula ZnNdxFe 2-x O4 (x = 0, 0.01, 0.02, and 0.03) were prepared by oxalate co-precipitation method and characterized by XRD, IR and SEM techniques. The gas sensing properties were studied for ethanol, LPG and chlorine. It was observed that nanocrystalline ZnFe2O4 shows maximum sensitivity to ethanol (~41%) followed by LPG (~22%) and less sensitivity to Cl2 (~10%) at an operating temperature of 327oC. The sensitivity of zinc ferrites increases with increase in Nd 3+ content. Response-recovery times of zinc ferrite decreases with increase in Nd3+ content.
Wide Spectrum Inhibitory Effect Study of Two Botanical Antimicrobials to Soil and Air Microbes
Authors: Huo Ping Hui , Li Jian Feng , Shi Shang Li , Zhang Shu Qing , Chen Li Yu , Miao Yang Yang , Zuo You Zhang , Duan Bing Hong
Published: March 2013

Two botanical antimicrobials: matrine and pyrethrin were used to study their wide spectrum inhibitory effect on microbes from air and soil, to compare their properties as effective inoculant additive. The result indicates that both the two antimicrobials have inhibited microbe number significantly as the increase of concentration contents, but stimulated microbe diameter. Matrine and pyrethrin have shown their superiority in inhibiting actinomycetes (completely inhibition concentration: 400 mg L-1 for air-oriented and 700mg L-1 for soil-oriented) and mould (completely inhibition concentration: 1000 mg L-1 for air-oriented and 1500mg L-1 for soil-oriented) growth, respectively, and could be chosen to conduct inhibition based on the specific situation of microbial inoculants.
Assessment of Free Spanning Pipeline Strength
Authors: Zhu Hong Jun , Qi Xing , Yang Yong Chuang , Wang Ming Yang , Liu Xiao Xu , Wang Qi Jun
Published: March 2013

Submarine pipeline failures usually occur at free span part, and free spanning pipeline is easily induced vibration by vortex, which accelerates the fatigue failure of pipe. Therefore, it is necessary to assess the strength of free spanning pipeline at regular intervals. In this paper, considering the effects of VIV, resonance assessment and yield strength assessment as well as buckling strength assessment are enumerated. And an illustration is calculated to verify the reliability of assessment method. This research may provide a guide for safety design, installation and maintenance of submarine pipeline.
Research on the Effect of Head Type on the Hydrodynamics of Vertical Motion Vehicle Launched by Gas Curtain
Authors: Cao Wei , Liu Hai Jun , Wang Cong
Published: March 2013

The numerical simulation was used to research the effect of different head vehicles on gas curtain and hydrodynamics in the process of underwater exiting tube and movement in water and exiting water under gas curtain launch. The two different heads of the vehicles could both smoothly pass through the narrowest place of the gas curtain and enter into the gas curtain jointed with air. Head type has little influence on the state and shape of the gas curtain and on the hydrodynamics. The drag coefficient is smallest and changes stably in the process of exiting water.
Study on the Underwater Rotating Apparatus with Changeable Rotating Angle
Authors: Wang Fei , Wang Yun , Zhang Yong Kang , Ni Tao , Zhuang Jian Jun
Published: March 2013

We proposed the underwater rotating apparatus with changeable rotating angle for the FDSO bottom construction, which includes a pair of arc-shaped base, the hydraulic support, the arc-shaped hydraulic rail, the driving motor, power supply units and the computer. The underwater rotating angle mathematical model was built with the known bottom block division. The apparatus has the features of changeable underwater rotating angle, nondestructive to the FDSO bottom and the semi-submersible barge, low labor intensity when compared with the original apparatus. Finally, the underwater rotating apparatus was successfully applied to build the Sevan Driller FDSO bottom, and the results show the model is correct and valid, which provides an important reference for the FDSO construction.
Synthesis and Properties of IPDI-TMP Waterborne Curing Agent
Authors: Lai Xiao Juan , Wang Lei , Ma Shao Yun
Published: March 2013

The waterborne curing agent was prepared by reaction of isophorone diisocyanate (IPDI), polyethylene glycol single methyl ether(MPEG) and trimethylol propane (TMP). The synthesis process of curing agent were monitored by Fourier transform infrared (FTIR) spectroscopy, and initial tack, peel strength, heat aging resistance, shear strength, creep resistance of all samples with different curing agent content were measured. The results showed that the curing agent dispersed well as an incorporated state in the waterborne polyurethane. The water and ethanol absorption decreased with increasing curing agent content, the peel strength was significantly increased up to 6.7 N/mm.
Belt Machine Welding Deformation Control and Correction Method
Authors: Wen Li Juan , Zhou Wei
Published: March 2013

This paper regards research as the welding steel welding deformation control and correction of the thesis, mainly focusing on the welding process, the tracking and analysis of welded I-steel welding process and deformation process, make appropriate preventive and corrective methods, try to prevent deformation, deformation control.
Experimental Study on Gas Production from Methane Hydrate Bearing Sand by Depressurization
Authors: Sun Jian Ye , Ye Yu Guang , Liu Chang Ling , Zhang Jian
Published: March 2013

The simulate experiments of gas production from methane hydrates reservoirs was proceeded with an experimental apparatus. Especially, TDR technique was applied to represent the change of hydrate saturation in real time during gas hydrate formation and dissociation. In this paper, we discussed and explained material transformation during hydrate formation and dissociation. The hydrates form and grow on the top of the sediments where the sediments and gas connect firstly. During hydrates dissociation by depressurization, the temperatures and hydrate saturation presented variously in different locations of sediments, which shows that hydrates dissociate earlier on the surface and outer layer of the sediments than those of in inner. The regulation of hydrates dissociation is consistent with the law of decomposition kinetics. Furthermore, we investigated the depressurizing range influence on hydrate dissociation process.
Green Design and Manufacture in Machine Tool and Hydraulics System
Authors: Guo De Yu , Li Kun Shan
Published: March 2013

By utilizing the theory of green design and green manufacture，the paper discusses advanced design concept and modern manufacturing concept, and probes into the model of clean manufacture and sustained development thinking in machine tool and hydraulics system.
Modeling and Performance Study of a Novel Cross-Node Support Structure of Free-Free Beam Vibration Gyroscope
Authors: Liu Yu , Zeng Hong Ming , Liu Shen , Chen Yan Ping
Published: March 2013

Analyzing performance of the free-free beam vibration, a novel cross-node support structure of free-free beam vibration gyroscope (CNSG) is proposed. In this paper, CNSG mathematical model has been established and dynamics equation has been deduced. To compare performance of two-node support structure of free-free beam vibration gyroscope (TNSG) through ANSYS software and relative theoretical calculation. The result indicates that CNSG’s sensitivity has reduced by 10.738%, but shock resistance has increase by 94.44%, interference resistance frequency has increase by 66.02% and the cross-coupling error between the drive surface and the sensitive surface has reduced by 12.759%. Thus it gives a rational design of the support structure and provides a guideline on CNSG in complex application environment.
Design on UHV System with TSP
Authors: Zheng Jin Hua , Li Cong Hui , Zhang Chong , Chao Yun Feng
Published: March 2013

A UHV(ultra-high vacuum) system, which used as deposition equipment with the assistance of high and low vacuum measuring instruments and other accessories, was designed in this paper. A CMP (composite molecular pump) in parallel with TSP (titanium sublimation pump) as the main pump and a rotary-vane pump as the backing pump were designed in this system. After a CMP with displacement 2300l/s was chosen as the one of the main pumps, the total flow conductance between the outlet of vacuum chamber and the CMP was 1344l/s. The rough pump-down time was approximate 5 min by using a rotary-vane pump with pumping speeds 15l/s. In order to ensure the normal operation of the main pumps, a water chilling unit was designed in the system, which can achieve limiting vacuum of 5×10-6Pa in the vacuum chamber of 0.2 m3.
Gear Fault Diagnosis Method Based on the Integration of Empirical Mode Decomposition and Cepstrum Analysis
Authors: Luo Bing , Yang Wen Tong , Liu Zhi Feng , Zhao Yong Sheng , Cai Li Gang
Published: March 2013

Gear is the most common mechanical transmission equipment. Therefore, gear fault diagnosis is of much significance. In this article, a gear fault diagnosis method based on the integration of empirical mode decomposition and cepstrum is proposed by introducing empirical mode decomposition and cepstrum into gear fault analysis. Firstly EMD is used to decompose the gear vibration signal finite number of intrinsic mode functions and a residual error item. To do gear fault diagnosis, cepstrum analysis is carried upon those intrinsic mode functions to extract feature information from the vibration signal. The results of the study on simulated and experimental signals show that this method is better than the cepstrum method and it can precisely locate the site of gear failure.
Research on Heavy Truck Cab Tilting Motor
Authors: Zhang Wen Fu , Zhang Xue Yi , Hu Jian Long , Yin Hong Bin
Published: March 2013

Heavy truck cab manual oil pump consumes more time and strength. Using tilting motor can produce larger tilting force for reversing the heavy truck cab and improve the tilting efficiency. The power of tilting motor, permanent magnet, armature plate and winding parameters are optimized on the basis of analyzing the cab tilting system works and the characteristics of the permanent magnet DC motor. The designed Nb-Fe-B PM DC motor is small volume, light weight high efficiency, simple structure and reliable operation characteristics, which can improve the security of tilting device of the heavy truck cab.
The Effect of Vortex Tube Air Cooling on Surface Roughness and Power Consumption in Dry Turning
Authors: Salaam Hadi Abdul , Ye Phoon Sin , Taha Zahari , Tuan Ya Tuan Muhammad Yusoff Shah
Published: March 2013

This paper presents a study of the effect of Ranque-Hilsch vortex tube air cooling on surface roughness quality and power consumption when turning mild steel material with coated carbide cutting tool. The cutting parameters involved in this study were cutting speed, feed rate and depth of cut. The cutting speed and feed rate were fixed at 160 m/min and 0.28 mm/rev, while the depth of cut was varied from 1.0 to 4.0 mm. During the turning process, the cutting temperatures were measured using an infrared thermometer and the power consumption was measured using a power and harmonics analyzer. The machined parts surface roughnesses were measured using a surface roughness tester. The results show that cooling using the Ranque-Hilsch vortex tube air cooling reduces the cutting temperature and the power consumption, but the surface roughness results is better when cooling with environment air.
The Lightning Preventing Methods for 10kV Distribution Lines
Authors: Wang Qing Hao , Zhang Yun Shan , Su Yang , Li Gang , Liu Bo , Zhang Hua , Liu Guo Bin
Published: March 2013

The importance and necessity of the domestic and international distribution lightning direction and governance of the distribution line lightning damage are described, and the distribution line lightning protection assessment methods and procedures and how to choose the arrester combined with the actual situation are discussed. The lightning location system and counter combination is a means to test the merits of lightning protection components are deep-seated argued, and it will be an important part of future governance lightning disturbance of distribution lines. To prevent induction lightning damages is the main direction for distribution system is clarified through lightning damages prevention of 10kV Langshi line.
The Patented Project Design for Preparing CuInSe2 Film
Authors: Liu Ke Gao , Ji Nian Jing , Li Nai Gen
Published: March 2013

The patent provides one method for preparing of CuInSe2 (CIS) photoelectric thin film used in solar cell. It belongs to the field of photoelectric film preparation technology. The patent includes the following steps. First clean glass substrate; Secondly dissolve CuCl2•2H2O, InCl3•4H2O, SeO2 by different solvents, then mix the solution and adjust the pH of solution to obtain homogeneous precursor solution; Thirdly drop the precursor solution to the glass substrate, spin coating and dry for precursor film. Then put the precursor film into sealed container which contains the hydrazine hydrate (N2H4•H2O), and keep the sample not in contact with hydrazine. Finally the sample is heated at some temperature, which makes it cool and dry naturally, CuInSe2 photovoltaic thin film is obtained. The method used in the patent does not require high temperature, high vacuum conditions and sophisticated equipment. So it has the advantages of low cost, high efficiency and simplicity. It is easy to control the composition and structure of the CuInSe2 photovoltaic thin film. And the CuInSe2 photovoltaic thin film is pure phase, continuous and uniform. So it is one feasible process to prepare high performance copper indium selenide thin film.
Research of Indirect Lightning over-Voltage on Power Supply Cables
Authors: Xie Pu , Huang Xin , Zhang Su Ning
Published: March 2013

Indirect lightning over-voltage is one of the main ways to cause damage to the military power supply. Firstly, the waveform analog and destructive analysis of the lightning current is carried out. And then, the principles and calculation model of indirect lightning over-voltage are studied. According to dipole model the electromagnetic filed distribution laws at the discharge instantly time are acquired. Through the space and time-discrete processing, the numerical solution of electric and magnetic fields is forwarded. Finally, by a large number of simulation tests, the influence laws of lightning location, line length, lightning return stroke speed and termination resistor effect on induced overvoltage is discovered, which provides quantitative indicators to the lightning protection design of the military power supply.
Analysis of 220kV Transformer Tripping Accident Caused by Neutral Point Gap Breakdown
Authors: Chen Gang , Wang Qing Hao , Huang Yu Xia , Li Gang , Wu Shao Yong , Zhang Jia Yan , Li Yan
Published: March 2013

Through the neutral point of the main transformer is breakdown gap under the lightning over-voltage, and the main transformer is tripped by the zero-sequence protection, the discharge dispersion of gap is large is indicated; When 220kV neutral point is ungrounded ,the protection must be sharing after arrester parallel gap is proposed. The two-phase or three-phase wave is the main reason of the protection device action are pointed by discussing the wave process in the transformer; The most simple and effective way is placing special transparent insulating over the gap is proposed.
Analysis of Box Transformer Oil Chromatographic Abnormal Data in a 35kV Wind Farm
Authors: Wang Qing Hao , Chen Gang , Pang Yan Jun , Zhang Wen Guang , Liu Guo Bin , Meng Yu , Zhao Cuan Zong
Published: March 2013

The design structure of the high voltage winding of the box transformer lead to high voltage between the high voltage winding layers, and electric field of each layer winding end is over-concentration, and the additional loss of load loss is too high, and thus lead to further the enameled wire of high voltage terminal happens partial discharge seriously and cryogenic overheating are discussed through the defects analysis of box transformer and a series of related experiments, hanging core inspection and analysis. If the hydrogen content is overweight seriously, total hydrocarbons is overweight, and methane gas content of total hydrocarbons is very high, ethylene and acetylene is very low, it can initially determine that low-energy partial discharge fault is inside the device are demonstrated. Finally, the corrective measures for the common problem of this group box transformer are presented.
Study on Hebei Wind Power Generation Enterprises’ Development-Countermeasures Based on the Cost-Benefit Analysis
Authors: Dai Li Xin , Tan Li Hua
Published: March 2013

This paper considered more comprehensive than traditional cost-benefit analysis. Spillover benefits and spillover cost were included. It also combined the development present situation of Hebei wind power generation enterprises and the corresponding policy of the twelfth five-year plan. It studied the development countermeasures of Hebei wind power generation enterprises from the perspective of comprehensive cost benefit with the purpose of easing the tension situation of energy and realizing the goal of energy saving.
Production Line Data Acquisition and Interlock System
Authors: Zhang Chang Xu , Jin Li Hui
Published: March 2013

Currently, the competitiveness of enterprises is turning to a full range of competitive products, quality, cost, and services. At the same time production is gradually shifted to automation, systematic mode. In this context, the fast, accurate transfer of information within the enterprise becomes particularly important. In order to manufacture products according to customer requirements, and efficient to meet the market demand, it’s vital to collect and deliver information timely and accurately during the whole process of production. This paper presents a data acquisition and interlock system for wafer production line to achieve the comprehensive management and control of the production process of the wafer. The system uses the Internet of Things (IOT) technology, wireless self-help network connection to connect network while booting. This achieves parameter settings, data acquisition, smart management and real-time monitoring of the flow sequence control in wafer production. In addition, the Internet of Things wireless communication technology to provide greater flexibility, fluidity, eliminating the cost and effort spent on wiring, realized in the true sense of the real-time, intelligent, low-power effect.
Research on Supervisory System Based on Power Management
Authors: Xie Pu , Hu Ren Xi , Liu Zheng Chun
Published: March 2013

To construct a supervisory control platform for hybrid energy supplement power supply system, the constitution, functions of a power management system are proposed. Supervision and control system is founded based on KingView according to functional requirements and characteristic s of the power management system. Driving procedure of the KingView is written according to communication protocol of the data acquisition module at first Communication between PC and machine is achieved. Then, the running of equipments is simulated, and real-time date is monitored, showed, analyzed and processed. Then optimal management, coordinative control and seamless switching of hybrid energy supplement power supply system are achieved.
Design of Individual Combat Positioning System
Authors: Tian Run Lan , Wang Chun Yu , Xiao Wei Hua , Ren Lin
Published: March 2013

The individual combat positioning system mentioned in this paper can track individual effectively and protect his safety. The system consists of a number of portable terminals and a base station. The portable terminals collect the positioning information of individual and keep communicating with the base station. The base station queries the terminal location information and display the location of individual on the map real-time.
Study on Preparation of Electromagnetic Shielding Coating Based on Nickel/PET
Authors: Chen Ying , Li Yuan Liang , Cui Zhi Min , Sang Rong Li
Published: March 2013

In this paper we select nickel as conductive powders, water-based adhesive as coating, PET as fabrics, electromagnetic shielding textiles were prepared by coating method. PET fabrics treated with sodium hydroxide before coating at the best concentration of 3%. Between the condition of 30MHz and 1500MHz, the SE of nickel/PET electromagnetic shielding coating can stable at about 37.0dB.It meets the requirement of environmental protection, and has widespread application foreground.
A Design of Low Temperature Dependence Voltage Reference Circuit for PWM Controller
Authors: Zhao Zhi Chao , Wu Tie Feng , Li Jing , Li Li Min , Pan Qie , Chang Jiang
Published: March 2013

In order to provide steady voltage for PWM controller, a design of bipolar voltage reference circuit with high performance is presented. The circuit based on the compensation principle between Zener diode and B-E junction of triode is used in PWM controller and can bring out multi-way steady voltages, moreover, there is a high power supply rejection ratio (PSRR) and low temperature dependence. The results of simulation and test in Candence with bipolar process of HuaYue SB45 show that the temperature coefficient is about 1.2ppm/°C in the temperature range -55~125°C. The line regulation is about 0.4mV/V in 8~30V and the PSRR is 77.54dB. The design of circuit can satisfy the requirements of PWM controller.
Intelligent Electronic Code Lock Based on the SCM
Authors: He Juan , Kang Shu Ai
Published: March 2013

The intelligent electronic lock system is designed with 51 single chip microcomputer as the control core in the paper. The system not only can realize unlocking, error alarm and modify passwords and other basic password lock function,but also it can realize remote control, the machine keyboard lock and error alarm. The system has the advantages of high security, high flexibility, wide use range and strong anti-interference ability, it particularly suitable for families, hotels and other places.
Based on the Repetitive Controller for Induction Heating Power Supply
Authors: Feng Yue , Liu Mei Qi , Qiao Mei Xia , Wang Jie
Published: March 2013

According to the electromagnetic induction heating power supply control system, puts forward a kind of proportion, integral, differential regulator with repetitive controller combined control strategy, in order to improve the heating process of the power supply output quality. Based on this control strategy, gives the repetitive controller each part parameters of the detailed design scheme and proportion, integral and differential controller coefficient; Construction of compensator Q(z) and S(z) , the introduction of zero phase shift Notch function, effectively inhibit PWM-type induction heating power supply output voltage harmonic interference. To carry out the simulation experiment, the results show that the proposed controller can guarantee that the system has better dynamic and static properties, error convergence rate is greatly improved.
Research on Timing of on-Chip Power Supply Noise with Analysis of Scientific Data Materials
Authors: Li Xiao Guang
Published: March 2013

Aiming at the problems of the influence in power-supply variations on timing analysis, this paper presents a new method to assign a supply-dependent hold margin based on analysis of scientific data materials, which describe a method to accurately characterize logic gates for the sensitivity of delay on supply-voltage variations, and then the method use a commercial microcontroller as a design example. Experiment results shows that the new method with analysis of scientific materials can get a good performance, even under the existing noise.
The Position Servo Control Strategy of High Dynamic Response Based on Electric Steering Gear
Authors: Zhao Guo Ping , Wu Hong Xing , Kong Min Xiu , Li Li Yi
Published: March 2013

This paper studies the current loop, velocity loop and position loop controller of PMSM position servo system for Electric steering gear servo system. It makes research around the principle of PMSM vector control and three control loop control strategy. The control strategy bases on the principle of vector control of PMSM when id=0 and uses the classic PI control theory. A new method of decouple control for the current of direct axis and cross axis direct is presented. It will overcome the impact of EMF when the motor is working in high dynamic. The system uses the feed-forward control to compensate the position deviation of permanent magnet synchronous motor using in the steering gear. The paper also researches transfer function of feed-forward control of the location, and establishes the feed-forward controller model of the position loop. Simulation results demonstrate the effectiveness of our proposed scheme.
Advance in Renewable Energy Using Piezoelectric Power-Harvesting Devices
Authors: Ismail Noorradiyah , Ghani Rasli Abd
Published: March 2013

This paper presents a designing piezoelectric harvesting energy device by having mechanical stressWhole system of the designing must be verified and validated through extensive experimental tests. The system structure consists of controller circuit that uses to simulate the system and show the amount of voltage. This generated electrical energy can be harvested using the principle of piezoelectric energy conversion. The propose design is divided into three categories, which are designing the prototype, electronic part and mechanical part. Designing proper mechanisms for exciting the piezoelectric device is necessary also proper electronic control circuits must be designed and modeled. It is used before implementing to the energy storage using a typical bettery. The project gives a new idea to develop a renewable energy as an electrical power system that can generate a power from having a lot of force from people moving so that they would not only depend on the hydro and coal power system.
Exploring Insights through Visualization of Association Rules from Text Mining Statistics
Authors: Sundararaman Arun Thotapalli
Published: March 2013

Visualization is an important technique for analysis of knowledge derived from text mining. While different approaches exist for visualization, this paper presents a novel way of visualizing the strength of association between multiple terms that summarizes association in the form of a matrix. This approach is expected to improve the way decision makers analyze insights from text mining.
3-D Networks for Mining Knowledge from Energy Policy Literatures
Authors: Wu Sen Po , Ho Zih Ping , Chiu Jung Hui
Published: March 2013

Data mining is a hot research topic over the last twenty years or more. In recent decades, network graphs that have represented knowledge of a focus topic have gained increasing attention. These maps include term network, concept map, topic map or knowledge map. A concept map is one of the visualization tools to show the relationships among concepts. It is a graphical tool for organizing and representing knowledge. Global warming poses a grave threat to the world’s ecological system. Economic development has led to a huge increase in energy demand and therefore energy efficiency and saving has become a key issue for most countries. In many countries, they tried hard to find renewable and sustainable energy supplies and sources. This study tries to analyze trends of energy policy literatures from the international literature database within last three years to be visualized in 3-D concept map layouts; besides, measuring keyword relation linkages though control variables of concept maps, such as size of node, linkage, relations and dynamic figure layout, are the main contributions to academics. This research adapts an IP (integer programming) model to maximize relation linkages for each node among a term network. The more linkages, the more useful information offered for mining knowledge from a term network. The 3-D concept map was demonstrated. Future research suggests applying this approach to other research literatures from international literature databases.
The Application of Mathematical Expectation in Reality
Authors: Deng Ji Xia
Published: March 2013

Mathematical expectation is one of the most important the digital characteristic of the random variable. This article through examples illustrates the application of mathematical expectation in life, including insurance, investment decision, profit on sales, customer service period of service, medical laboratory.
Database Dynamic Programming Based on B/S
Authors: He Lu , Zhang Yan Mei
Published: March 2013

Short for Browser/Server, B/S is designed to centralize the core part of system functions on the server side, when users just need to install a browser on the client side, such as Internet Explorer, Firefox. Thus, the browser can be used for data exchange through the Web Server anywhere, as long as the computer accesses to the Internet. As a result, there is no doubt that the development of B/S structure system has become main-stream as the Internet has developed rapidly today [1]. As we all know, it is increasingly challenging that customers are having more and more requirements of details and depths, which demands more of a software developer. Now we are exploring a new method of programming by configuring database in order to improve the traditional three layer architecture (3-tier application). It would be quicker and more convenient for developers to modify functions according to the requirement changes from customers, largely reducing the workload either in development or maintenance.
Study on Site Selection Method of Third-Party Logistics Distribution Center
Authors: Wang Qing Jun , Wang Xiao Bin , Wang Qian Qian
Published: March 2013

This paper illustrates theories relative to third-party logistics and distribution center, analyzes the basic principles abided by site selection of logistics distribution center and effect factors, and finally optimizes the site selection of logistics distribution center through fuzzy comprehensive evaluation, which has certain practical significances.
A Print-Scan Resilient Watermarking Scheme Based on the Numbers of the DCT Positive and Negative Coefficients
Authors: Jiang Yun Fei , Fu Yong Gang
Published: March 2013

Copyright protection has drawn much attentions especially in the advent of computer and the internet. Illagal copying of digital multimedia has been much easier because of widely using of the modern technologies.This paper proposes a novel digital watermarking algorithm based on the numbers of the blocked middle DCT positive and negative coefficients. Embedding watermark into the middle frequency of DCT is a perfect idea and it can receive a trade-off between robustness and imperceptibility.We utilized the embedding strength to get a balance between their robustness and imperceptibility. The results show that the algorithm is robust to print and scan process.
Reusing Diggings Abandoned Place is an Important Way in Environmental Protection
Authors: Shan Yu , Zhang Wen Jun
Published: March 2013

Today digging are the most serious typical biogeocenose in the earth biosphere.abandoned place is a kind of an exceeding uncovered place,which has exiguous vegetable and water,serious soil loss,and which brought serious pollution of water,soil and air.thereby a series of problem in economy,ecological land society were touched off.reusing diggings abandoned place is an important way in promoting continuous and coordination development in mining and the other aspects.meanwhile it is also an effective channel to protect social stability,improve ecological environment,and realize “occupy-recoup balance, damage-recoup balance’’. It is important to research the type and quality of site diggings abandoned place,which will provide scientific basis for resuming vegetable and using soil resource in reason.
Influence Factors of Calcium Carbonate Whiskers Prepared by Intermittent Bubbling Method
Authors: Liu Bei Ping , Chen Jian , Liu Fang Bo , Zhou Shi Biao , Chen Yuan Dao , Huang Xiao Bing
Published: March 2013

Calcium carbonate whiskers were successfully prepared in the MgC12-Ca(OH)2-CO2 system by a intermittent bubbling method and characterized by X-ray diffraction and scanning electron microscopy. The results demonstrated that aragonite style calcium carbonate whiskers with well morphology, large aspect ratio and smooth surface can be obtained by controlling technical conditions such as reaction temperature, concentration of Ca(OH)2 and amount of additives and under the conditions of CO2 flow velocity of 3.4ml/min/gCa(OH)2, flow of CO2 to air ratio of 1:4, stirring speed of 240 r/min.
Electrochemical Performance of Mg-Doped Li2FeSiO4/C as Cathode Material for Lithium-Ion Batteries
Authors: Huang Xiao Bing , Chen Hong Hui , Li Huang Rong , Yang Qian Peng , Zhou Shi Biao , Chen Yuan Dao , Liu Bei Ping , Yang Ji Feng
Published: March 2013

Li2FeSiO4/C and Li1.97Mg0.03FeSiO4/C composites were successfully prepared by a solid-state method. Both samples were systematically investigated by X-ray diffraction(XRD), scanning electron microscopy(SEM), the charge-discharge test and electrochemical impedance spectra measurement, respectively. It was found that the Li1.97Mg0.03FeSiO4/C composite exhibited an excellent rate capability with a discharge capacity of 144mAh g-1 at 0.2C and 97mAh g-1 at 5C, and after 100 cycles at 1 C, 96% of its initial capacity was retained.
Information System Success Model in Healthcare and Medical Informatics with Open Source Software
Authors: Liu Chien Hung , Chang Po Yin
Published: March 2013

Open source software (OSS) has attracted a lot interest among academics and practitioners from mid-1990s. However, there is insufficient attention on healthcare and medical informatics (HMI) of OSS (HMIOSS), most studies on OSS success are either qualitative or exploratory in nature. Hence, to identify the factors that influence HMIOSS success and establish generalize ability, an empirical study measuring HMIOSS success would enable HMIOSS developers and users to improve HMIOSS usage. In this study, we develop a HMIOSS success model from a previous information systems success Model incorporating the characteristics of HMI domain. This research contributes towards advancing theoretical understanding of HMIOSS success as well as offering practitioners for enhancing HMIOSS success.
Discover the Root: Construction of Authenticity in Culture-Driven Products
Authors: Chang Tsen Yao , Wen Che Ting
Published: March 2013

An ‘industrial economy’ is based on cost, whereas a ‘service economy’ focuses on quality. The coming era of an ‘experience economy’ would allow customers to demand for more than the basic features of a product. One example of such special product feature is authenticity. For the past years, the Taiwanese government has actively promoted the policy of a creative and cultural industry. This directive has led to the production of a tremendous amount of culture-driven products. The eager demand for designs of culture-driven products poses a challenge to their quality, which leads to a discussion of their authenticity. This research generalized the importance of authenticity through a literature review, and utilized grounded theory to analyze the authenticity of culture-driven products. Through customer interviews, the concept of cultural authenticity factors is deconstructed. The results indicate that feelings of authenticity originate from the cultural message implied by the culture-driven product. Furthermore, cost and quality are determined as the main considerations for the rendering of cultural authenticity. Culture-driven products remain characterized by their basic features. Hence, customers cannot receive the cultural message if they are dissatisfied with the product cost and quality. Therefore, the research outcomes were used to develop a theoretical model for the design process of culture-driven products to assist designers in observing the needs of the target market, and to reconstruct the feelings of cultural authenticity by satisfying customer needs.
Applications of Thermostable Cellulolytic Bacteria to Agricultural Wastes
Authors: Hsia Shao Yi , Yang Shiuh Kuang , Cheng Jyin Wen
Published: March 2013

At the present time the demand for energy, goods and materials is surging because of advanced technology and population growth. However, the resources on earth are limited. For this reason, the issues concerning using the resources effectively and changing them into energy are important. Taiwan creates a vast amount of agricultural waste every year. Traditionally, the agricultural waste would be burned and buried. It is not only the fact that we can’t reuse and recycle the agricultural waste, but also the problem of air pollution when they were burned. Therefore, it is necessary to create a solution that can recycle and reuse the agricultural waste, and change them into energy. The agricultural waste is full of wood fiber, and it can be reduced by a microorganism method. This study will use a common agricultural waste which is cane because it is one of the main agricultural products in Taiwan. The wood fiber in cane will be added to the thermostable cellulolytic bacterial Geobacillus thermoleovorans T4 which is found from in sugar refinery wastewater found often in Southern Taiwan. The results showed that T4 can increase the rate of reducing sugar. The reduced sugar can then translate into energy. This method can help to recycle and reuse agricultural waste, and it will decrease environmental pollution.
The Application of Digital Publishing Format in E-Reading Machine
Authors: Liu Ding Yu , Tsai Ming Jyh
Published: March 2013

The coming of digital living, as well as the rising popularity of smart phones and tablets, has seen a rush by digital content applications on mobile devices. Most have focused their attention on the hardware and equipment, while the source of content and format development has attracted relatively little attention. For the electronic books industry, hardware is not the only challenge. The development of the ebook format is another issue that they must now contend with. Future mobile readers continue to follow the trend towards color. Thinner, lighter as well as ever cheaper electronic products with more integrated functions are also on the table. If a reader appears that offers more advantages and is better suited to user requirements, this means the publishing format of ebooks will naturally evolve in the direction of multimedia ebooks that offer greater variety. Right now, the hardware side of digital publishing formats is developing in multiple directions. No single specification has emerged for publishing format and copyright management however. As most publishers and authors still harbor doubts about licensing in digital publishing, this has also made it difficult to acquire digital copyrights. All of these are important issues facing the digital publishing industry today.
A Liquid Analysis of the Rectangular Wave Input Signals of Hydraulic Mufflers
Authors: Shan Chang Ji , Li Lin , Luo Jun
Published: March 2013

This paper makes use of the method of computational fluid dynamics (CFD) to group the Hydraulic muffler of network grid and makes a fluidic analysis of the rectangular wave input signal of the hydraulic muffler without intubation noise absorption effect. The result manifests that the employment of CFD simulation technology to hydraulic muffler can provide evident theoretical support for further development and study of hydraulic muffler, and is possible to lay a foundation for continuous studies of the hydraulic muffler.
Study on Optimal Design of Case Ejector Mechanism of Tank Autoloader Based on Kinematical Simulation
Authors: Chen Ya Ning
Published: March 2013

To make optimal design of case ejector mechanism easier and more efficiency, a novel method based on kinematical simulation and combining modern computer technology with the features of traditional linkage design is presented. By analyzing transmission state of double-rocker mechanism of ejector, establishing a kinematical simulation model and determining the appropriate data of the mechanism, a designer could easily design a case ejector satisfying all the requirements on movement or trajectory in the given conditions. Meanwhile, the transmission factor of the mechanism is highly increased. The results from optimal design of the case ejector of certain type of tank show that the transmission factor of the mechanism is increased by 58.4%.
Research of Flow Coefficient of New Throttling/Sealing Valve Based on CFD
Authors: Jin Ya Bin , Zhou San Ping , Zhang Hong , Yang Rui
Published: March 2013

The flow coefficient of the valve is an important index of measuring the valve circulation ability, a major process parameter of and a significant technical indicator of valves and regulating valves on an industrial basis. Numerical simulation was performed on the flow coefficient of the valve by using FLUENT, software of computational fluid mechanics and by the standard model. The flow and the resistance coeffients were obtained based on the numerical simulation of a new type of throttling /sealing valve under the same pressure differentials but with different opening conditions. The results demonstrate that the flow coefficient of the throttling/sealing valve is in close compliance with the typical curve of equal percent, and thus provides an important basis for its optimized control.
Modal Analysis of Airborne Equipment Mounting Rack
Authors: Zhang Jing Dong , Qi Xue Mei , Tang Rui
Published: March 2013

Stability and safety performance of aircraft is determined by reliability of aviation airborne equipment, airborne equipment mounting rack work under severe mechanical vibration. To improve the system reliability, we established accurate parametric finite element model, obtained modal of frequency and vibration by analysis, confirmed correctness of this method by experiment, laid the foundation of its comprehensive dynamic analysis and structure optimization design for structure and working conditions of a electronic equipment mounting rack in this paper.
Modeling and Analyzing for Rotor System with Imbalance-Misalignment Coupling Faults Based on Nonlinear Finite Element Method
Authors: Xu Fu Ze , Li Xue Jun , Wang Guang Bin , He Yi Lin
Published: March 2013

This thesis constructs the dynamical model of the imbalance-misalignment coupling faults and the finite element model of the rotor system which are supported by rolling element bearing. It analyses the impacts from the coupling faults to the system on the basis of nonlinear finite element method, dynamic theory and Newmark-beta numerical integration method. It also studies the influence of the unbalance, misalignment and coupling faults to the system by applying the dynamic response chart and time-frequency properties. The study shows that there exist unstable high and low harmonic components, the unbalanced signal overshadowed by misalignment. It also discovers that besides the working frequency, there also exist tow times frequency and other high doubling components on the response spectra with two times frequency for the most. All those study results provide some theoretical reference for the fault diagnosing of the rotor bearing system, the vibration control and the stability research.
Preparation Processes of Filter Aids Using Diatomite Concentrate
Authors: Ren Zi Jie , Gao Hui Min , Guan Jun Fang , Liu Xi
Published: March 2013

t is a developing trend for the filter aids industry that producing filter aids using the diatomite concentrate of beneficiation owing to the limited resources of high quality diatomite. In the present paper the characteristics of diatomite concentrate from LinJiang were studied systematically. Additionally, blending processes of diatomite with flux, disintegration methods after calcination, effect of distribution of size and soaking time of filter aids on the permeability are explored. It is expected to be significative to the industries of filter aids preparation and filtration applications.
Preparation and Characterization of Homogeneous Grafted Cellulose in DMAc/LiCl System
Authors: Chen Fu Shan , Sun Zhong Hua
Published: March 2013

The homogeneous grafting of methyl methacrylate (MMA) onto cellulose was carried out by using ammonium persulfate as an initiator. DMAc/LiCl was used as the solvent for the dissolution of cellulose and the media for the homogeneous graft polymerization of MMA onto cellulose. The efficient reaction conditions of the grafting reaction were confirmed by weighing methods. The results showed that the efficient reaction conditions were as follows: reaction time, 2h; mass ratio of MMA/cellulose, 1/1(g/g); mass ratio of initiator/cellulose, 6/50 (g/g); and reaction temperature, 80°C. Under these conditions, the GP of homogeneous grafted cellulose can reach 76%. The grafted polymer was characterized by FTIR, SEM and TG-DTA.