bluuebunny/crossref_metadata_2025 huggingface dataset:
Greenhouse Environment Monitoring System Design and Implementation
Authors: Wang Li Fen
Published: December 2014

the supervising system of flower house's enviroment,which is put into function by the popular series of AT89S52 single machine tablet,mainly measures and controls the major tempreture and humidity of enviroment,which will be revealed by showing system.the paper gives an introduction of system's software,hardware design and the process of performing.the system is easily manured with great utility.at the same time, it worths being popularized and used.
Application Strategy for Container Architecture
Authors: Zhou Jun Lin , Xie Ling Feng
Published: December 2014

In the current process of urbanization in our country, more than 1,000,000 waste containers are abandoned every year. The recycling or reuse rate of waste container is low, and relevant research is insufficient, resulting in the waste of resources and energy, as well as environmental pollution, which does not comply with the principle of sustainable development. Use of waste or old containers by converting them into housing, temporary sites or mobile facilities and other projects is feasible. The reuse of abandoned building materials not only can save energy and solve practical problems, but also can develop a new model of container construction techniques. It is of great significance.
CO2 Heat Pump Intelligent Defrosting Design Based on PLC
Authors: Yang Jun Hong , Zhu Qiang , Liu Shen
Published: December 2014

CO2 heat pump is a new type refrigeration equipment of energy saving, environmental protection and high efficiency, it is the basic direction of future sustainable development in HVAC. But it runs in winter, because of the influence of the external environment will be the formation of frost on the evaporator surface, thereby reducing the heat capacity of heat pump units, even in normal operation. Combined with the practical application of CO2 heat pump, the design of a PLC based intelligent defrosting system; this system is a good solution to the CO2 heat pump, low temperature and high humidity environment of the defrosting problem.
Sewage Wastewater Treatment Plant Inverted AAO Process Design
Authors: Wang Li
Published: December 2014

The graduation design topic for a sewage treatment plant processesdesign - inverted AAO process in durian. Main task is tantamount to designaccording to the requirement of the nature of the city sewage, sewage, scalepreliminary design to complete sewage treatment plant and single processing structure design.
Analysis on Physical Evidence of Arc Grounding Fault in Single-Phase Circuit
Authors: Wang Xin Ming , Gao Ao , Zhao Chang Zheng , Gao Wei
Published: December 2014

The desired sampleswhich formed by the arc grounding fault in single- phase circuit of thisarticle were obtained through the simulating test. The results indicated thatthe multi-layer structure of the melted marks on copper conductors could beobserved through the metallographic analysis while the arc grounding fault in single-phasecircuit happened, which was the most significant characteristic betweenthe arc grounding fault and the short circuit fault. What's more, there were individualfeathers on the iron earthed object through its own metallographic analysis.The outcomes are intended to provide the significative references for those whoare dedicating themselves to investigating the fire scenes and identifying thephysical evidence.
Research of the Temperature Field Distribution Based on FVM for Oil-Immersed Transformer
Authors: Wang Yong Qiang , He Jie , Ma Lun , Wang Liu , Sun Ying Ying , Wan Tao , Dang Jian Fei
Published: December 2014

Thehottest spot temperature (HST) of windings of oil-immersed transformer is animportant factor that affects load capacity and operation life of transformer,and is closely related to the transformer load, top oil and environmenttemperature. HST, when operating at high temperature and overload, may lead totransformer failure which will affect the normal operation of the power system.In order to calculate the transformer hot spot temperature accurately, we takea 33MVA-500KV transformer as an example, and establish a three dimensionalmodel, get its internal temperature distribution based on Fluent simulationsoftware. At last, we comparative and analysis the accuracy of FVM calculation andIEEE guidelines recommend model combined with online monitored values. Theresults show that the FVM method with higher accuracy relative to the IEEEguidelines model, proved that using the FVM can accurately calculate the HST ofoil-immersed transformer.
Spectral Characteristics of Heart Rate Variability in Noise Exposure
Authors: Tseng Li Ho , Yang Ching Chang , Lee Yuan Po , Wu Hong Zhun , Chou Chia Yi
Published: December 2014

Ecological studies have shown that the chronic effects of exposure to environmental noise cause annoyance. However, in the past, most studies have used questionnaires to evaluate the effects of noise pollution on psychosomatic responses. This study investigated cardiovascular activity changes in exposure to low-frequency noise at various noise intensities. The authors hypothesized that distinct noise intensities affect cardiovascular activity, which would be reflected in the spectral analysis parameters. The evaluation intensities of low frequency noises (from 20 to 200 Hz) were background noise (BN), 70-dBC, 80-dBC, and 90-dBC. The electrocardiographic (ECG) data was recorded for 5 minutes under various noise levels. The cardiovascular responses were evaluated using spectral analysis of the beat-to-beat (RR) intervals obtained from ECG signals. The results showed that the average blood pressure and mean RR interval variability did not substantially change relative to the noise levels. However, the low-frequency (LF) power and the ratio of LF power to high-frequency power (LF/HF) from ECG under the BN condition were significantly lower than the 80-dBC, and 90-dBC noise levels. In addition, the normalized LF of the background noise condition was significantly lower than the low-frequency of the noise levels at various intensities. In conclusion, the frequency-domain-based measures appear to be a powerful tool for exposure to low-frequency noise, even in short-term heart rate variability time series.
The Prediction for Sewage Emissions in Xi'an Based on the Theory of Grey System
Authors: Sun Wei , Liu Xiao Jun
Published: December 2014

The water pollution and water scarcity have restricted the development of economy seriously in Xi'an. And the wastewater quantity is an important basic data in solving this problem. This paper build GM(1,1) model based on grey system theory to predict the discharge volume of urban domestic sewage and industrial wastewater from 2013 to 2020. The predictions suggest that the discharge amount of industrial wastewater will reduce by 6.7005 million tons per year. While the amount of domestic sewage increases year by year at the speed of 11.0989 million tons. The percentage of domestic sewage in total sewage emissions will get bigger in Xi'an. Additionally, some suggestion about improving the efficiency using of water and reducing sewerage discharged are given.
Study on Aqueous Polymer Isocyanate Adhesive Pressing Changbai Mountain Abies NEPHROLEPIS Furniture Parts
Authors: Niu Xiao Yi
Published: December 2014

Furniture with people's lives, but furniture is a combination of furniture components, in addition to solid wood, other furniture parts are pressed together by a variety of plates, environmentally friendly water-based isocyanate adhesive by furniture manufacturing loves. Waterborne isocyanate adhesive using toluene diisocyanate (TDI) crosslinked polyvinyl alcohol (PVA) chemical reaction processes and reactants properties, good water resistance polyvinyl alcohol emulsion preparation, room temperature curing, water-resistant, resistant to moisture and good bonding high-intensity environment-friendly wood adhesives.
The Study of Influence Factors of Water Balance in the Hotel
Authors: Yang Ying , Liu Xiao Jun
Published: December 2014

In order to recognize andvalue the comprehensive benefits of decentralized waste water treatment andreuse project in the hotel,according to the water balance in the process ofreclaimed water reusing, determined its structure and content elements with theview of system theory, pointed out the influence factors of water balance, combinedwith the example, the entropy weight method is used to analyse and calculate theweight of influence factors, got the main reasons for system water imbalance, providedsome advice for the investment and configuration of the reclaimed water reusein the hotel.
A Study on the Thickness of Heat Insulation Materials Based on Total Cost of the Optimal Principle
Authors: Han Hui
Published: December 2014

The cost of building insulation materials in construction phase has a significant impact on its energy costs in operational phase, so that it plays a meaningful role to make the total cost of insulation material low in both phases. From the point of the selection to thickness of outer heat insulation materials, this paper, making full use of energy simulation software, is keen to study on the thickness of heat insulation materials based on optimal cost principle in perspective of whole life cycle, in case of an artitecture in a some shopping mall. With the aid of eQUEST energy smulation software, this paper tries to simulate the cost of cooling and heating technology, besides it simulates different thick insultion materials, which takes advantage of mathematical models to acquire the relationship between energy consumption and thermal insulation. At last, it can be summarised the best thickness of heat insulation materials with low cost, and it can also provide some proposed improvements for the original design through comparision.
Sulfur-Extended High-Performance Green Paving Materials
Authors: Gladkikh Vitaliy , Korolev Evgenij Valerjevich , Poddaeva Olga I. , Smirnov Vladimir A.
Published: December 2014

Currently, there is a strong need of high-performance and environment-friendly paving materials in Russian Federation. Sulfur dumps near the oil industry enterprises consumes area which otherwise could be occupied by vegetation, contributing to the improvement of the environmental situation. Incorporation of sulfur in bulk building materials contributes to decrease of load to the environment. The results of numerous studies of sulfur-extended asphalt concretes are summarized in the present work. For the suppression of hydrogen sulfide and sulfur dioxide we propose to use the complex nanoscale modifier. The application of such modifier leads to several positive effects. Both amount of sulfur in constructional mix and mobility of the mix can be increased. The values of operational properties, notably compressive strength and resistance to rutting, can also be increased. Due to consumption of industrial by-product, the environmental load decreases in regions near the oil and gas industry enterprises.
Effects of Aquifer Heterogeneity and Geochemical Variation on Petroleum-Hydrocarbon Biodegradation at a Gasoline Spill Site
Authors: Lien Po Jen , Ho Hsiao Jung , Lee Tzu Hsin , Lai Wen Liang , Kao Chih Ming
Published: December 2014

In subsurface environment, small-scale heterogeneities usually cause the reduction of the applicability of in situ remedial techniques. Biogeochemical heterogeneities and preferential groundwater flow paths create complex hydrogeologic conditions at most contaminated sites. A thorough understanding of the resulting three-dimensional distribution of contaminants is a necessity prior to determining a need for remediation. In this study, a gasoline spill site was selected to examine the effects of aquifer heterogeneities and geochemical variations on petroleum hydrocarbon biodegradation via different oxidation-reduction process. At this site, two multilevel sampling wells were installed to delineate the lateral (5 m) and vertical (0.5 m) distribution of contaminant concentrations and different biogeochemical parameters. Two 5-cm (I.D.) continuous soil cores [from 4 to 8 m below land surface (bls)] were collected within the gasoline plume to evaluate the distribution of the microbial population in soils. Results show that high microbial activities were observed in soil samples based on the following evidences: (1) high petroleum hydrocarbon degradation rate, and (2) high microbial biomass. Each soil section was used for chemical extraction, microbial enumeration, and grain size distribution. Results show that the soil sections with more permeable sediment materials corresponded with higher biomass (total anaerobes > 2 x 106cells/g) and significant contaminant degradation. However, those sections with less permeable sediments contained lower microbial population. Results indicate that the subsurface microorganisms were distributed unevenly in the aquifer, and some regions were devoid of microorganisms and biodegradation activities. Spatial distribution of microorganisms, soil materials, and biogeochemical characteristics in the subsurface soils control the extent and kinetics of contaminant biodegradation. Thus, using blended aquifer materials for measurement of in situ biodegradation rates may not achieve representative results.
A Safe and Transparent Sensor Network Data Aggregation (STDA) Program
Authors: Al Jaoufi Mohammed Ahmed Ahmed , Liu Yun , Zhang Zhen Jiang
Published: December 2014

In recent years, with the rapid development of the era economy and ever-changing science and technology, today's era information gradually moving towards a diversified network communication. Sensor networks data aggregation mainly gradually reduce redundant transmission and reduce energy consumption to the maximum extent. Currently sensor network data aggregation scheme as an important form of information transmission, is widely used in all kinds of data transmission. This sink node comprehensively checks and compares data and also ensure its secure transmission of data. In the process of researching and analyzing a secure and transparent gathering sensor network program data, this paper firstly introduce the safety data convergence protocol and encryption data aggregation scheme, and then build the network model and the attacker model and elaborate sensors data convergence specific program and finally analyze sensor network data solutions security.
Local Area Network Information Security and Virus Countermeasures of the Internet
Authors: Zhao Ying
Published: December 2014

With the rapid development of computer networks and the Internet, while promoting the development of all aspects, the Internet also brings some trouble. The text starts from the Local Area Network information security status, analyzes problems in LAN information security management, puts forward maintenance and virus prevention strategies for LAN security.
Anti-Jamming Ability Research on COFDM Modulation of UAV Image Transmission
Authors: Wu Zhuang , Ma Xiao Xin , Zhang Lan
Published: December 2014

Thefrequency offset and phase noise will make the orthogonal property between eachsub carrier deterioration. Only1% frequency offset will cause 30dB signal-to-noise ratio decrease. In order to researchanti-jamming ability on COFDM modulation, we use the PXW-100S type codedmodulation module and the PXW-500S type DVB-T receiving board for unmannedaerial vehicle(UAV) platform, through the elimination of inter symbol interference(ISI) and inter carrier interference(ICI).
A Memetic Gravitation Search Algorithm for Solving Permutation Flow Shop Scheduling
Authors: Huang Ko Wei , Chen Jui Le , Yang Chu Sing
Published: December 2014

The permutation flow-shop scheduling problem (PFSP) is an non-deterministic polynomialtime (NP) hard combinatorial optimization problems and has been widely researched within thescheduling community. In this paper, a memetic gravitation search algorithm (MGSA) is proposedto solve the PFSP for minimizing the makespan measure. The smallest position value (SPV) rule isutilized for converting the continuous number to job permutations for determining the most suitablethe proposed MGSA for the PFSP. The proposed MGSA uses a Nawaz-Enscore-Ham (NEH) heuristicalgorithm for initialization of population, and a simulated annealing (SA) is coupled with the variableneighborhood search (VNS) as the local search method to balance exploitation and exploration. Toverify the robustness of the MGSA, it is compared with three particle swarm optimization (PSO) algorithmson the basis of 12 PFSP instances with different job sizes ranging from 20 to 500. The resultsdemonstrate that the proposed MGSA can outperform other compared algorithms.
A Proposal of a Haptic System for Real-Time Interaction with Clay-Like Objects
Authors: Liu Lan Hai , Miyake Satoshi , Akahane Katsuhito , Sato Makoto
Published: December 2014

People often interact with deformable objects when they are kneading clay or making traditional desserts, either directly with their hands and fingers or through tools. Haptic interactions with virtual clay-like objects would significantly make the simulations more interesting and more real. However, to achieve a stable and real-time simulation of a clay-like particle system with high viscosity is challenging. In this research, we propose a novel method that allows real-time haptic interaction with clay-like objects. The particle system is based on a SPH(Smoothed-Particle Hydrodynamics) model, and the procedure of the conventional SPH method for fluid simulation is improved for simulating a particle system especially of high viscosity. The haptic rendering is done by a string-based haptic interface SPIDAR-G. We evaluate the performance and the stability of the proposed method in the end.
An Improved Particle Filtering Algorithm Based on Mean Shift Algorithm for Infrared Target Tracking
Authors: Yin Xi Peng , Xia Lin Lin , He Min Can , Cheng Wei
Published: December 2014

Animproved particle filter algorithm which based on mean shift algorithm isintroduced. The algorithm makes the particles move towards the high likelihoodregion in posterior distribution with the effect of mean shift algorithm,increases the efficiency of the particles moving, and reduces the phenomenon ofdegradation and dilution of particles
The Effect of the Substitution Position of Nitrogen Atoms on Copolyimide Properties
Authors: Li Yu Han , Jin Ri Zhe
Published: December 2014

Two containing nitrogen diamine monomer, 2-(4-aminophenyl)-5-aminopyrimidine (PAPRM) and 2,5-two(dimethyl amino methylene)-1,4-((paraamino) phenyl)benzene(DMAPB), was synthesized. The corresponding copolyimide containing 40–80 mol % PAPRM and DMAPB were prepared. The copolymers showed excellent solubility and good ﬁlm-forming capability. Most of the SPI membranes were both tough and flexible and thermally stable up to 330 °C.With increasing content of the nitrogen atoms, water uptake of membranes and dimensional changes also remarkable decrease. Compared with the main chains containing nitrogen atoms, the side chains type displayed excellent water stability and good mechanical properties.
Applications of Difference Equation in Population Forecasting Model
Authors: Huang Chun Miao , Wang Wei Ping
Published: December 2014

This article gets thepopulation data based on China Population Statistics Yearbook ,and establishes a model for forecasting thegrowth of population grouped by ages. First, a difference equation model invector form is established for urban area, town and rural arearespectively. In equation (I), matrix is determined byfertility rate and survival rate of urban area, townand rural area respectively. The short-term population size predicted from thismodel has calculated the gross population of each year during 2002~2020. The 19data we got were used to generate a function between population size y (hundredmillion) and time x (year) by polynomial fitting : , and the max of this function is y = 1.47121 billion when x= 20, which means that the Chinese total population will peak at 1, 471, 210,000 in 2021.
Big Data Based on Fuzzy Grey Information System Security Intrusion Detection Research
Authors: Zhou Li
Published: December 2014

With the rapid development of computer networktechnology, and also can be used as well as the increasing number of users ofcomputer network, how to effectively guarantee the network information securitybecomes a key technology of computer network. This paper through the literatureinvestigation method to build the information system security risk evaluationindex system, and combining the expert evaluation process could not get all theinformation in the information system security, a method of information systemsecurity risk assessment is put forward. Was carried out on the key technologyof information system based on big data discussion and analysis, and brieflyintroduces its development prospects. Secondly illustrates the necessity ofintrusion detection, and the concept of intrusion detection and the model isgiven. Finally summarizes many kinds of intrusion detection method and thesystem structure, discusses the existing problems of this field and theresearch direction in the future.
The Effect of Holding Time under Heat Treatment on the Properties of T92 Steel Welding Joint
Authors: Yang Dong Xu , Yang Lu , Huang An Guo
Published: December 2014

This article describes the welding joint property of ferrite heat-resistant alloy steel T92 by taking tungsten inert gas (TIG) welding measures before post weld heat treatment on 760°C with holding time of 0,2,4 hours. Test data were analyzed in relation to microstructure,tensile and impact properties and hardness distribution on the welding joint,then the effect of holding time under post weld heat treatment on properties of joints can be investigated.The results demonstrated that micro-hardness in the weld and tensile strength decreased with tempering time prolonging, while impact toughness increased with the extension of tempering time. The untempered martensite in form of needle was coarse in the joint. With the extension of holding time under tempering, the martensite structure obtains fine grain and the lath characteristic becomes obvious. It can be found that the segregation of carbides in base metal occurred and the content of ferrite increased with the extension of holding time under tempering.
Neuroethical Issues Related to Brain-Computer Interface Technology
Authors: Hu Jian Feng
Published: December 2014

With the development of neuroscience, brain computer interface (BCI), as the emerging technology to liberate our brain, is receiving increasing attention from society, but its ethical issues are rarely mentioned. This article introduces the brain-computer interface and its significance，analysis the focus point which may lead to ethics controversy, explore the core issues of ethics and code of ethics to be followed.
Related Issues Study of Wireless Sensor Network Security Data Fusion
Authors: Al Jaoufi Mohammed Ahmed Ahmed , Liu Yun , Zhang Zhen Jiang
Published: December 2014

Data fusion technology is widely used in data processing due to its characteristic of less transfer data. However, with the continuous application of wireless sensor networks, it raises higher demands for information integrity and privacy, data fusion faces new challenges. The paper focuses on issues related to the integration of wireless sensor network security data, analyzes its attack types of surface degrees and the need for security protection.
Related Research on the Crime of Illegal Invasion into Computer Information System
Authors: Zeng Yi
Published: December 2014

The rapid development of information technology makes the construction of computer information system possible, greatly facilitates people’s lives and improves the efficiency of learning and production. Computer information system is also applied in many sensitive areas. To improve the management efficiency of information and data, the behaviors that related computer information systems are illegally invaded are increasingly rampant and have seriously endanger national security, territorial security, sovereignty security, political security, military security, economic security, cultural security, science and technology security, ecological security and information security. In terms of the crime of illegal invasion into computer information system, this paper studies from several aspects, the cognizance of crime and non-crime, the accomplishment and attempt of the crime, subsequent criminal behaviors and legislative perfection.
Research and Application of Apriori Algorithm for Mining Association Rules
Authors: Ye Yi Yong
Published: December 2014

For large amounts of data generated by the e-commerceplatform, combining with the actual needs of e-commerce recommendation system,make research on a common technique of association rules which orientede-commerce Web mining association analysis, introduces the association rules ofApriori mining algorithm, and the specific application of Apriori algorithm isanalyzed through a practical example, Finally, point out the shortcomings ofclassical Apriori algorithm, and gives directions for improvement.
Research of Intrusion Detection Based on Immune Algorithm
Authors: Wei Ming Jun , Wang Yue Yue , Jin Jian Guo
Published: December 2014

On the basic of multiple populations of immune algorithm and clonal selectionalgorithm, the purpose of this paper is to further improve the detectionefficiency and reducing the false alarm rate. This paper uses the kddcup99 dataset as the experimental data set, and chooses four types of attack data groupof experiment data set as initial population of multiple populations of clonalselection algorithm, through the algorithm to create the optimal model. Basedon the principle of normal data larger than the abnormal data, in turn,experimental data set matched with the normal data set and the optimal model bythe improved R matching algorithm. The results of this paper show that thedetection rate increased significantly
The Application Research in the Coal Mine on Chirp-UWB Wireless Communication Technology
Authors: Liu Hai Long , Wang Yan
Published: December 2014

With the rapid development of wireless network technology, according to the actual need, the computer network group network type and each node has different function, so that the computer network system has node complexity, structure complexity and various other complexities. For these reasons, the large scale computer network can be treated and researched abstractly as specific Chirp-UWB network. Therefore, to keep up with the trend of technology progress by means of computer wireless technology, aided design of wireless communication system, it is quite necessary for the implementation of computer management of production safety.
Reclaim of Nitrous Gas Produced in the Production of Adipate
Authors: Xiang Li Jun , Chen Shuang Kou
Published: December 2014

Reclaim of large amounts of nitrogen oxides wasstudied which was produced in the production process of adipate in ChongqingChemical Industry Co. Ltd. The waste gas first was cooled, then into theabsorption tower through the compressor, most of the nitrous gas was absorbedout in the form of nitric acid after treated by three absorption towers. Weresearched gas composition at the gateway of recycling equipment by gaschromatograph, and which showed that all NO, NO2and nitric acid gas werealmost absorbed out, while N2O without being absorbed was eventuallyemissions into the atmosphere at the allowed concentration range. The research resultsshowed that could recycle 33,000 tons of nitric acid and saved 60 million yuan RMBfor the company every year after treating by the recycling equipment, whichfully embodied the economic value and environmental significance, and put out anew target of treating nitrous oxide gas.
The Improvement on Minimum Error Rate Optimization Criterion Dynamic Resource Allocation Algorithm
Authors: Hu Ji Wen
Published: December 2014

Fischeris a classic dynamic resource allocation algorithm, and the optimizationcriterion is to minimize the system error rate base on a constant bit rate andsystem power. However, the Fischer algorithm is still have problems with highcomplexity, and it require long time to calculate, all these problems making itdifficult to use in an actual system. This paper is an improvement on Fischeralgorithm, the improved algorithm will keep the same error rate, reducing thecomplexity, shortening the arithmetic operation time and increasing thepracticality of the algorithm.
The Real-Time Supervision System of Constructors’ Unsafe Behavior Based on RFID
Authors: Dong Da Min , Yu Juan Juan
Published: December 2014

In order to realize the real-time and effective supervision ofconstructors’unsafe behavior, we put forward to apply RFID technology to thereal-time supervision of unsafe behavior.According to the analysis of factorsthat influence constructors’ unsafe behavior in the process of theconstruction, using the functionof RFID technology for information storage andreal-time location,so as to build subsystem based on static factors andsubsystem based on dynamic factors. We apply this system to realize real-time supervisionof constructors’ unsafe behavior.This technical method solves the deficiency oftraditional management methods ignoring constructors’ internal factors and letsreal-time supervision come true. In the end,it could improve safety managementperformance in construction site.
Hardware-in-Loop Simulation Training System and Application on Ship-Borne Satellite Earth Station
Authors: Zhang Jing Bo , Xu Jia Rui , Liu Ze Shui
Published: December 2014

The ship-borne satellite earth station was studied to establish a hardware-in-loop simulation system for employee training. Preliminary demand analysis for staff of all levels shows the complexity of this system. Based on the distributed simulation theory of HLA, system framework and implementation approach was proposed. Key technologies for modeling and simulation of ship-borne satellite earth station were discussed in this article. Subsequently the block diagrams of device simulator and simulation agent were clearly described. Finally the specific steps of operation were created to show the details of actual running process, which prove the feasibility of this system.
Penalized Estimation Based Variable Selection for Semiparametric Regression Models with Endogenous Covariates
Authors: Zhao Pei Xin
Published: December 2014

In this paper, we study the variable selection problem for the parametric components of semiparametric regression models with endogenous variables. Based on the penalized empirical likelihood technology and the bias adjustment method, we propose a penalized empirical likelihood based variable selection procedure. Simulation studies show that the proposed variable selection procedure is workable, and the resulting estimator is consistent.
Study of Periodic Frames and Trivariate Tight Wavelet Frames and Applications in Materials Engineering
Authors: Sun Song Zhen , Guo Yi
Published: December 2014

It is shown that there exists a frame wavelet with fast decay in the time domain and compact support in the frequency domain generating a wavelet system whose canonical dual frame cannot be generated by an arbitrary number of generators. We show that there exist wavelet frame generated by two functions which have good dual wavelet frames, but for which the canonical dual wavelet frame does not consist of wavelets, according to scaling functions.
Impact of Wi-Fi Electromagnetic Waves on Brainwaves
Authors: Kao Fu Chien , Wang Shin Ping R. , Lin Yun Kai , Chen Chih Chia , Huang Chih Hsun
Published: December 2014

In the era of wireless communication, WiFi becomes an indispensable accessory to most of us. People use WIFI to interact with the wireless Internet, perform commercial and financial transactions, or conducting recreational activities, etc.Though it offers a more convenient life to people, the strong Electromagnetic waves(EMW) resulted from it endangers human health, that has already turned out to be the primary study for medical science. Furthermore, EMW also attracts concern and panic of the inhabitants living in the surroundings which is filled with high-frequency and low-frequency EMwave. EMW today comes from broadcast towers, the system of the wireless communication, GPS, TVs and defense satellites mostly. Enjoying the convenience resulted from communication technology, people nowadays should also concern about whether EM wave would damage people’s health at the same time. Based on the perspective of cognitive neuroscience, this study mainly focuses on how EM wave produced from WiFi affects subject’s brainwaves under a specific physiological situation. The researcher observes different changing of brainwave when human beings expose in various strength of EM wave, and analyses the affection of EMW toward subject’s brainwaves.
Optimization and Analysis of Alvarez Lens
Authors: Yen Jyh Chyang , Chen Jin Jia , Huang Kuang Lung
Published: December 2014

Alvarez lens is one of the free form lens designs. After optimized, the focusing distance curve of Alvarez lens keeps smoothly when Δd increased. We also found the effects of the affective factors, and the good performances of geometric image and illumination surface analysis.
Study on Measuring Medium and Heavy Plate Flatness and Spot Center Extraction Algorithm
Authors: Hu Xu Xiao , Yang Ming Min , Li Ji
Published: December 2014

Oblique incidence lasertriangulation was used to detect medium and heavy plate flatness in this paper.The article mainly focused on point laser spot center extraction algorithm. Infielddetection of medium and heavy plate flatness, according to the problem of thepoint laser spot center extraction difficulty in interference condition, andfor enhancing lightness of spot center filed, an extraction algorithm of pointlaser spot center is put forward in this paper which combines threshold methodand square-weighted gray level based on floor board effect and traditionalcentroid method. Under no interference condition, point laser spot centerextraction using traditional centroid method has high accuracy. In the fielddetection with dusts, oil drops, water drops or other interferences,measurement precision has since fallen sharply. On this background, accordingto a kind of point laser spot center with the interference of water drops oroil drops, classification extraction algorithm of point laser spot center wasput forward in this paper. At the first level, the spot and the drop contourwas extracted with Sobel Operators. At the second level, the spot area wasextracted. And then, this spot area center was extracted by a point laser spotcenter extraction algorithm which combines threshold method and square-weightedgray level. And the center we get is point laser spot center. The validationresults show that with the water drop interference, the accuracy with a pointlaser spot center extraction algorithm which combines threshold method andsquare-weighted gray level is obviously improved by 94.17% than the traditionalcentroid method.
The Disturbance of Inductive Proximity Sensor for Mobile Robot
Authors: Tsung Tsing Tshih , Tang Thi Khanh , Hoai Nguyen
Published: December 2014

Non-contactingproximity sensors are widely promoted for position detection through determiningthe distance between sensor and object. Besides, the usage of non-contactinginductive proximity sensors for object detections such as finding non-ferrousand ferrous metal tape is the popular technique in mobile robots. Most of thetechnology uses simple HF- oscillation principle as an inductive proximitysensor (IPS) with a decrease in the quality of the oscillator circuit’selectromagnetic to find the tape. By applying this technique, the externalfactors may cause negative effects to systemperformance. To overcome this situation, we set up a hand measurement withinductive proximity sensors and two tapes, meanwhile main tape and disturbingtape are separated by an obstruction sheet. After measuring, dataresults are used to analyze the influence of the obstruction sheet thickness anddisturbance tape to the noise in received signals. The research isthe fundament for further applications, based on inductive proximity sensor formobile robot that could be more robust against noises and disturbances.
Model and Simulation of New Driving Active Mass Driver System
Authors: Liu Jun Long , Dai Jing Hui
Published: December 2014

Aimingto improve the shortcomings of the AMD control system, new direct drivingactive mass driver (DAMD) is developed.The mathematical models of hydraulic power mechanismand hydraulic actuator of DAMD are set up, which leads to the whole equation ofrotation speed-drive force is constructed and the rotational speed of the pump(the driving voltage of servo motor) as input and the active control force asoutput is used. From the above derivation and analysis, the state equation forcontroller structure-DAMD control system is presented. Numerical analysis iscarried out on the structure responding control of the DAMD control system structurewhich is a top designed study object under earthquake load action. Results showthat in some degree,DAMD control system can be used to substitute thetraditional AMD control system for large-span structure to realized activecontrol of structural vibration.
An Improved Synchronous Drive Control Platform of Multi-Servo Motor Based on DSP Used in Teaching
Authors: Zhang Yu , Ma Feng Ying , Shi Wen Bin
Published: December 2014

In order to demonstrate the synchronous driving capability of multi-servo motor, an improved synchronous drive control platform based on DSP used in teaching was established. The dedicated motor control chip ASIC-TMS320F2812A was adopted with a unique independent PWM control signal output function. The hardware components were introduced, resulting in principle and duty cycle of the PWM waveform calculation. The tests showed that the DSP servo control system has good performance of high reliability, fast dynamic response and low noise.
Application of TRIZ in the Innovative Design of Pneumatic Exhaust Devices
Authors: Liu Yung Chou , Li Kuo Yi
Published: December 2014

This paper presents an innovative design of pneumatic exhaust devices,in order to solve the problems of excessive weight and slow movement of traditionalelectric exhaust devices. The research method was TRIZ. The inventionprinciples for systematic innovative design were identified by using improvedand worsened parameters of the contradiction matrix. The pneumatic exhaustdevice was 5 kg, and operated for 30 minutes at 1800RPM per 10kg of air amount.Its purpose was used to rescue persons trapped by dense smoke within shorttime. The proposed invention can be applied to dense-smoke place wherecombustible gas may leak, because the traditional electric exhaust devicesgenerate spark during operation which may cause gas explosion. Moreover, theproposed design uses pneumatic exhaust devices, which are especially used inplaces where gas explosion may occur, and has the advantages of flexibility, safety,and portability. The proposed design is an excellent fire protection device,and can be used to rescue persons trapped by dense smoke and fire within shorttime.
Modeling and Simulations on CO2 Storage Using Graphene
Authors: Chen Yung Tsang , Chan Yue
Published: December 2014

In this paper, we adopt boththe Lennard-Jones potential and the mean field theory to determine themolecular interactions between carbon dioxide and the double layered graphenes.In addition, we employ a modified van der Waals equation which takes into accountthe multi-scale effect in the absorption regime todeduce the gravimetric uptakeof carbon dioxide between graphene sheets. We show that the full absorptionoccurs at rather low external pressure at low temperatures while this happensat roughly 0.2bar at room temperature. The current methodology has the merit ofrapid computational times and producing deductive results in comparison to theusual MD simulations.For graphene sheets of a separation of 10 Å, the maximumgravimetric uptake could reach 13.3 wt.%.
Design of Automobile Shock Absorber Based on Throttle Type Adjustable Damping
Authors: Ming Yang
Published: December 2014

With the deepening of reform in the industrial sector, automotive manufacturing technology has been greatly improved. Suspension damping effect of the traditional shortcomings of poor correlation analysis suspension constituted by employees, starting from the improved shock absorber damping valve, designed and developed Nepal adjustable shock absorber set, in order to improve traffic safety and create favorable conditions. This damper is in the computing speed and power, the analysis of the relationship between the motor and the throttle on the invention came. Practice has proved that through adjustable automobile shock absorber damping curve smoothing, deformation is not obvious, the stepper motor rotation into correspondence with the damping force, with better value.
Design of Multi-Functional Hydraulic Test Bench
Authors: Shi Jun Qing
Published: December 2014

In order to adapt to the development trend in current vocational education, we developed a multi-functional hydraulic test bench for mechatronics teaching practice. The component structure and functional features of the test bench was introduced in this paper and the application to vocational education was proved to be effective. Practice shows that the bench not only provides students with good experimental conditions close to the actual production and inspires learning enthusiasm and innovation consciousness of the students, but also provides teachers with a platform for scientific research, improves the utilization value of equipment.
Development and Application of Flexible Pressure Sensor Pad
Authors: Wu Chuan Shih , Chen Tsair Rong , Lin Sheng Yao
Published: December 2014

With the gradual rise inthe proportion of the aging population, the world has entered the agingsociety. Thus, the assessments of service to care receivers and home sleepquality have attracted more emphasis and attention of the medical sector. Theactuation principle is to apply a load on the upper sensor film, which touchesan external electronic control device to form the micro-current conduction.Thus the movement information of care receivers getting into or out of bed areprovided, and then through the device itself or emergency call device of thenursing station, warnings to the care receiver and other functions are given.This research aimed to understand the relationships of positive load, andrepeated load of the sensor pad to resistance; and at the last course of theexperiment, SEM and AFM were used to observe the change of oil ink organizationon the surface of the sensor film before and after the experiment as anamendment parameter for subsequent designs of the sensor pad. Future researchdirections for the flexible pressure sensor pad can be aimed at detecting bodypressure distribution, assessment of sleep quality, and so on.
Intelligent Motion Control System Overall Design and the Research of Automatic Dispensing Machine
Authors: Xiao Shou Bai
Published: December 2014

Expounds the independent design automatic glue machine, separately introduces the two parts of the design of servo dispensing machine in detail,which is the upper machine and the lower machine.its characteristic is set motion control and dispensing control at an organic whole,solved the four shaft synergy control,real-time,coordinate display time-sharing reuse the technical difficulties. The human-computer interface of the upper machine is mainly described, The lower machine design is divided into hardware and software: For the hardware, the intelligent motion controller of the dispensing machine is introduced, For the software, the transplant of the real-time operating system μC/OS-Ⅱ and the realization of the function module protocol are introduced.The functions of the dispensing machine such as data input, data transmission, the dispensing operation, data feedback are realized in the design through the field test and operation.The system is characterized by stable operation, reliable data. And low cost,convenient in maintenance,from the control accuracy,speed,dispending thythm watch,already reach automatic glue machine intelligent motion control performance.
Research on the Recursive and Step-by-Step Algorithm for Extraction of Point Laser Spot Center
Authors: Hu Xu Xiao , Li Ji , Yang Ming Min
Published: December 2014

Whentesting the flatness of plate iron, if there is no disturbance in the spotdetection, the traditional centroid method and circle fitting method can bewell applied to extract the point laser spot center. However, the disturbanceof droplets, dusts, oil droplet and other factors are unavoidably in thepractical projects, and then the detection precision will falls sharply. In orderto solve the problem, the recursive and step-by-step method of extracting pointlaser spot center is proposed. There are two steps in this method.The thresholdcentroid method is used as the first step to extract the spots which containthe black blocks. The second step is to construct the template whose center hasa black block, then extract the black block center by running phase correlationalgorithm and the center is just the center of the point laser spot. Theresults of experiments verify that the precision of the spot center coordinateextracted by the proposed method is obviously higher than that extracted by thecentroid method and the circle fitting method with the disturbance of droplets.
Using of the Principle of Autogenous Crushing in the Production of Caustic Magnesia
Authors: Olijár Andrej , Vaňko Branislav
Published: December 2014

Magnesium MgO exists in nature in large quantities as magnesite (MgCO3) and dolomite (CaMg (CO3)2), and in lesser amounts than oxide in the form of mineral called periclase. Magnesite refractory material containing MgO may be obtained from the high purity magnesite ore simple purification and subsequent calcination at a temperature of 500-700 °C.
Welding of Aluminum to DP600 Steel Plates by Refill Friction Stir Spot Welding Process (Refill FSSW): Preliminary Results
Authors: Verastegui Roger Navarro , Mazzaferro José Antonio Esmerio , Mazzaferro Cíntia Cristiane Petry , Strohaecker Telmo Roberto , Dos Santos Jorge Fernandez
Published: December 2014

The main objective of the current work was to produce sound Refill FSSW joints between AA6181-T4 aluminum and DP600 steel plates. The steel plates were used in two different surface conditions: with and without galvanized surface layer. The Taguchi statistical method was used to find out the set of parameters indicated to produce joint with higher mechanical resistance. Then, the possibility of joining these dissimilar metals using the Refill FSSW process was verified. Tool rotation speed and welding time were varied to observe its effect over the joint behavior. The results of lap shear tests showed that galvanized layers do not cause any substantial change on the final joint mechanical resistance, even though different joining mechanisms had been observed.
Application of Genetic Algorithm in Cutting Parameter Optimization
Authors: Zhu Li Feng , Zhang Yan
Published: December 2014

Process parameters optimization is an important problem in numerical control machining, through the analysis of various factors affecting the cutting effect in cutting process, a mathematical model of cutting parameter optimization in NC machining is established and the constraint conditions are also determined in the paper. The article puts forward using genetic algorithm to realize the optimization of mathematical model, and the optimization analysis results are verified in practical processing. The experimental results show that the optimized cutting parameters can satisfy machining requests and improve the cutting efficiency.