bluuebunny/crossref_metadata_2025 huggingface dataset:
Application of Stepped Isothermal Method for Prediction the Creep Behavior of Extruded Polypropylene Geogrid
Authors: Grebneva Valeria , Utkina Ksenia , Sabri Mohanad , Stolyarov Oleg
Published: January 2015

Geogrids are designed to be a support structure in geotechnical and civil engineering applications. Geogrids manufactured with the extrusion of a polymer must posses the necessary level of tensile strength and low creep. In this paper, a study on application of stepped isothermal method for prediction of creep behavior of extruded polypropylene geogrid used for soil reinforcement was carried out. On the basis of the obtained data, a possibility of creep prediction for structures with geosynthetics for periods of time much longer than experimental measurements was demonstrated.
Design of Lightweight Glass-Fibre-Reinforced Epoxy I-Beam for Structural Applications
Authors: Afanasev Nikita , Martynov Petr , Stolyarov Oleg
Published: January 2015

This study deals with design and evaluation of mechanical properties of the I-shape beam made from plain weave fiberglass fabric and epoxy resin. The possibility of production of I-beam with fiberglass laminate stitched layers has been demonstrated and the prototype of glass-fibre-reinforced epoxy I-beam was manufactured. Tensile properties of fiberglass of manufactured samples were investigated. The results showed that the investigated fiberglass composite has a sufficiently high tensile strength comparable to steel. However, the modulus of elasticity of the samples is quite low.
Modeling of Concrete Behavior under Compression
Authors: Kitaeva Daria Anatolievna , Rudaev Yakov Isaakovich , Ordobaev Beishenbek Sydykbekovich , Abdykeeva Shirin Suyunbaevna
Published: January 2015

Formulation of the model suitable for the description of the full material deformation diagram is considered, with axial compression applied, and a loosening component added to elastic and plastic deformation. The materials involved are initially heterogeneous environments like rocks and artificial construction materials, like concrete. Such materials, being in a stationary state, stable for small disturbances, can be interpreted as dissipative structures after the limit of elasticity is reached. The deformation and destruction processes are analysed as instability hierarchy, resulting from self-organization. Methods of mathematical catastrophe theory are applied for the model construction. The energy state function is presented as the sum of the potential function, responsible for reversible deformations and disturbances. The latter involves an imperfection parameter (a controlling one), connected with damageability and responsible for the structurization process. The state equation is obtained by energy function minimization on the order parameter and is supplemented with the kinetic equation for the imperfection parameter. The synergetic methods are shown to be advantageous for the problems of formulating physically well-grounded nonlinear defining equations.
Geometrically Nonlinear Rods Theory - Comparison of the Results Obtained by Cosserat-Timoshenko and Kirchhoff's Rod Theories
Authors: Beliaev Mikhail , Lalin Vladimir , Kuroedov Vladimir
Published: January 2015

Up to the present solutions for geometrically nonlinear rods were obtained only by the Kirchhoff’s theory. This theory disregards flexibility of the rod on tension and shear. For rods in modern software suites the Cosserat-Timoshenko rod theory is generally used. As opposed to Kirchhoff’s theory it takes into account tensile and shear stiffness. This paper presents solutions obtained by Cosserat-Timoshenko rod theory. These results can be used as benchmark problem for verification of software suites.
The Effect of Weathering and Biological Exposure on the Tensile Properties of Nonwoven Geotextile
Authors: Bykova Julia , Dzonik Ekaterina , Stolyarov Oleg
Published: January 2015

This paper deals with the effect of weathering and biological exposure on the tensile properties of needle-punched PP nonwoven fabric. In the experiment, samples of the geotextile were exposed to the above factors for different time, and then their tensile strength was determined. The obtained results showed the significant drop in the tensile strength after the exposure to UV radiation and slight drop after soil burial test.
Development and Investigation of Mechanical Properties of Glass Fiber Reinforced Concrete
Authors: Beliaev Mikhail , Semenov Sergey , Stolyarov Oleg
Published: January 2015

Nowadays, new types of concrete reinforcement are finding increasing use in civil engineering applications. The use of fibrous materials as reinforcement for building structures gives opportunity for the manufacturing of concrete elements with reduced thickness, high strength, and high corrosion resistance. This paper includes development and determination of mechanical behavior of concrete reinforced with glass fiber, roving and composite reinforcement.
Finite Element Modeling of Steel Pipeline Reconstruction Using Fiberglass Composite Material
Authors: Nekliudova Ekaterina A. , Semenov Artem S. , Semenov S.G. , Melnikov Boris E.
Published: January 2015

A stress state of the partially damaged underground steel pipeline after reconstruction by means of the fiberglass composite material is considered. The strength properties of the composite are determined experimentally. The effective elastic moduli of the composite are determined by means of the finite element homogenization. Tsai-Wu failure criterion is used for the composite part of the pipeline. The influence of geometrical parameters and loading conditions on the safety factor of the pipeline is analyzed and discussed.
Bending of Laminated Composite Plates
Authors: Rakočević Marina , Vatin Nikolay
Published: January 2015

In this work, there are presented overviews of theoretical and numerical models for defining the stress-strain state in the cross section of moderately thick and thick composite plates in case of bending. Layered composite plates are constructed by combination of layers of various materials and geometrical characteristics, wherein each of them has got a bearing capacity in previously defined directions. By applying Equivalent Single-layer Laminate Theory (or ESL theory) these layers' problems cannot be solved successfully. That is the reason to apply contemporary theories of plates, in literature known as Layerwise theories. At the end of this work, there are given numeric examples of applying Partial Layerwise Theory.
A Posteriori Error Control at Numerical Solution of Plate Bending Problem
Authors: Korneev V.G.
Published: January 2015

The classical approach to a posteriori error control considered in this paper bears on the counter variational principles of Lagrange and Castigliano. Its efficient implementation for problems of mechanics of solids assumes obtaining equilibrated stresses/resultants which, at the same time, are sufficiently close to the exact values. Besides, it is important that computation of the error bound with the use of such stresses/resultants would be cheap in respect to the arithmetic work. Following these guide lines, we expand the preceding results for elliptic partial differential equations and theory elasticity equations upon the problem of thin plate bending. We obtain guaranteed a posteriori error bounds of simple forms for solutions by the finite element method and discuss the algorithms of linear complexity for their computation. The approach of the paper also allows to improve some known general a posteriori estimates by means of arbitrary not equilibrated stress fields.
Optimization Models of Heat Treatment Process of Masonry in the Winter due to a Stationary Heating System Constructed Buildings Oil Production Complex
Authors: Sultanova Ekaterina , Fedortsev Igor , Filippov Vladimir
Published: January 2015

In this work we propose a new method of heat treatment of the masonry in the winter and the algorithm flow management masonry that reduces overall construction time of the building. Under the proposed algorithm calculating the heat treatment of masonry in winter conditions with stationary heating house developed software that automates the thermal engineering calculations and the necessary organizational and technological parameters of the organization of building flow, which greatly optimizes the performance of the project
Strength and Stability of Arched Frame Structures Made of Brittle Material
Authors: Aznabaev Askar , Bondarenko Semen , Gureev Kirill , Likhaia Daria , Loginova Irina , Lopatin Nikita , Stolyarov Oleg , Yakovleva Elena
Published: January 2015

The paper describes the creation of the arched frame structures made of brittle material. Pasta were chosen as the base material. Their basic geometrical and mechanical characteristics were evaluated. Finite element analysis of the pasta frame structure was made in SCAD and ANSYS. The internal force factors arose in the structure were compared. Its actual carrying capacity was determined in virtue of the structural solidity and material`s experimental evidence. Also the features of optimized structure design were found, the assembly process was described, the test results of the construction were presented. The comparison of the results of finite element modeling and actual laboratory tests was done.
The Computational Model of Spatial Formation of Cracks in Reinforced Concrete Constructions in Torsion with Bending
Authors: Salnikov Alexey , Kolchunov Vladimir , Yakovenko Igor
Published: January 2015

It is proposed a computational model of spatial formation of cracks in reinforced concrete constructions under the action of torsion with bending, based on working assumptions and constructed equations. The physical interpretation of the solution is that it allows to search for generalized minimum load, which corresponds to the formation of the first crack and the spatial coordinates of the point of its formation.
Probable Errors of Dynamic Method at Conservative System Stability Analysis
Authors: Rutman Iurii , Ulitin Victor
Published: January 2015

Application of dynamic method for conservative system stability analysis is considered. It is shown that the use of this method may cause essential errors. A detailed analysis of error causes is given. A number of models is considered, at which stability analysis, errors occur. Threat evaluation of such errors is given. It is shown that the physical nature of probable errors is in that in degenerated dynamic system these forms of stability loss correspond to the original system from which all dynamic degrees of freedom are excluded. Recommendations which allow excluding probable errors are given. Method which may be called degenerated system dynamic method is proposed. This method is especially effective at time dynamic analysis of linear degenerated system subjected to short-term loads.
Characteristic and Application of Facade System ‘Polialpan’
Authors: Vatin Nikolai , Nemova Darya , Marinenko Daria , Talan Ekaterina
Published: January 2015

The article is about ventilated system “Polialpan”. Article’s materials are based on estimated data, information taken from Media, different Internet resources, photo and video materials. The aim of the research is to show the possibility of improving of the housing stock, its reconstruction and modernization with using special façade system. It means that in this article we flush out the all details of this facade system. There is thermotechnical calculation, demonstrative that façade system “Polialpan” is satisfy the requirements of normative document. The cost analys is in it too, which is based on the specific residence building in Saint-Petersburg.
The Optimal Control of the Elastic Stress State Using Boundary Loads
Authors: Lalin Vladimir , Savchenko Alexey , Dyakov Stanislav , Lalina Irina
Published: January 2015

For elastic frames authors offer a method of solving the tasks of optimal control of the stress state, when the boundary loads are the controlling parameters. In difference from other papers it is offered to use deformation energy as a merit functional. This functional estimates the deviation between two functions: optimal function and given function. Examples of the solution are given.
New Numerical Methods for Structural Mechanics Problems in Unbounded Domains
Authors: Chernukha Nikita
Published: January 2015

The article is devoted to the problem of numerical simulation of unbounded domains in structural mechanics. Nowadays there are many numerical methods to analyze structural mechanics problems in infinite domains. A brief analytical review of existing numerical methods is presented. Among them are finite difference method, boundary element method (BEM), finite element method (FEM) and scaled boundary finite element method (SBFEM). No one suggests general approach for all kinds of problem statements. Vast majority of industrial software realize FEM. Considering this fact it is more reasonable to modify FEM for mechanical problems in unbounded domains. New variational differential method and new FEM modification, based on the approach of quasi-uniform grids modelling in finite difference method, are proposed. New numerical methods enable to solve problems in semi-infinite and infinite domains without introduction of artificial boundaries and setting special non-reflecting conditions. The article shows basic steps of new numerical algorithms for problems in one-dimensional semi-infinite computational domain.
The Glass Ventilated Facades – Research of an Air Gap
Authors: Petrichenko Mikhail , Ostrovaia Anastasia , Statsenko Elena
Published: January 2015

In this article the scheme of a design, its advantage is considered and the factors influencing removal of moisture from an air gap of a facade are investigated. This type of designs allows to create indoors a favorable microclimate with necessary illumination, temperature, moisture conditions and the movement of air, protecting thus from negative atmospheric actions. Also at observance of technology indicators of moisture-proofness of facades improve, temperature fluctuations are leveled, normal functioning of all system in general is provided. Despite a set of advantages of this type of facades take place and some shortcomings therefore the obtained data indicate the need of further research of systems of the ventilated glass facades and work on elimination of the revealed shortcomings.
Calculation Method of Justification of Technical Actions for Prevention of Ice Dams Formation on Buildings with a Pitched Roof
Authors: Vatin Nikolay , Gorshkov Alexander S. , Nemova Darya , Urustimov Aydos , Staritcyna Anastasiia , Ryimkevich Pavel
Published: January 2015

The article presents the methodology of thermal balance equation generation for cold attics. This methodology is aimed to provide the scientific basis for engineer activities to prevent the ice hillock building-up on roofs during the periods of the lowest temperature of outside air. The complex of actions that leads to reduction of damages from buildings of thermal energy is listed, heating up to improvement of parameters of a microclimate in the operated rooms of the top floors of buildings. For realization of these actions any materials and technologies providing the necessary level of thermal isolation for the concrete building and satisfying to the fire-prevention and sanitary and hygienic requirements existing in the territory of the Russian Federation are used
Geodetic Measurement of Vertical Displacements (Illustrated with the Slovenian Viaduct)
Authors: Kovačič Boštjan , Kamnik Rok , Vatin Nikolay
Published: January 2015

Today there are a lot of sophisticated methods to measure and analyse a bridge during load tests as a GPS, photogrammetric measurements, laser scanning, etc., The use of an classical techniques as trigonometric hights is still good enough for most demanding field observations. In practice control measurements are performed with the help of geodetic measurements, of which the basic goal is to capture any geometric changes in the measured object, or its displacements and deformations are found. In this article the use of trigonometric hights during a load test on the biggest Slovenian viaduct “Črni Kal” is introduced, displacement measurements on the viaduct and an analysis of results, with particular stress on the accuracy of the calculations.
Finite Element Modeling of Porous Material Structure Represented by a Uniform Cubic Mesh
Authors: Levandovskiy Andrey , Melnikov Boris
Published: January 2015

The work explores feasibility of 3D finite element modeling (FEM) to study the effective linear properties of porous brittle material microstructures represented by a uniform cubic mesh. Both artificial virtually generated and real 3D tomography specimens are considered in this work. A method for assessment of the critical value of tomography resolution is proposed. A method to build approximations of the linear effective structure properties of interest at virtually zero FE size is developed. The methods do not have to be associated with mechanical modeling only but can be applied in some other cases, e.g. effective thermal conductivity or effective permeability calculations.
Possibilities of Implementing Customer Relationship Management in the Function of Improving the Competitiveness of the Civil Engineering Sector
Authors: Melovic Boban , Jocovic Mijat , Lugovskaya Irina , Vatin Nikolai
Published: January 2015

Modern business strategies and quality of business environment are conditions for increasing competitiveness of companies in the civil engineering sector. Basic idea of Customer Relationship Management (CRM) is to shift the focus from the product to the buyer and in that way to build quality, long term and profitable relations. Products and services must be adjusted to the demands and specifications of certain clients. CRM is not a technology but a business concept, business philosophy. Basic aim of CRM in the civil engineering sector is gaining and keeping customers with the biggest purchasing potential. The article show that the implementation of the CRM system is in the direct positive correlation with business results of the companies from the civil engineering sector. In order to make the CRM strategy successful, it is necessary to determine appropriate strategy of creating long term, sustainable and profitable relationships with buyers, then to adjust business processes of the company and if necessary to adapt the organizational structure to creating the environment which is totally focused on the buyer.
Recourse Optimization of Construction on a Basis of the Frontal and Rhythmical Stream
Authors: Simankina Tatiana , Sergeenkova Olga
Published: January 2015

In article is offered the method of calculation of a frontal and rhythmical stream, at which initial temporary operating conditions of crews periodically repeat (under a condition of continuous use of resources). It allows to provide the demanded duration of performance of work and the minimum quantity of resources.
Renewal Methods of Construction Machinery According to Technical and Economic Indicators
Authors: Repin Sergey , Evtjukov Sergey
Published: January 2015

This article presents the results of an investigation for a new method to form sets of construction machinery. The model for optimizing the set of construction machinery implies the possibility to consider the following: the influence of the quality of operation onto the technical state of the machinery, which is characterized by the readiness factor; costs and reliability of the purchased equipment, new and the used one; influence of capital overhauls; selling machinery and purchasing new one at a higher price; decommissioning old equipment; accompanying economical losses, which is a concealed form of insuring against insufficient reliability of the equipment; optimizing the service life along several criteria – minimum investment, maximum profit, specified level of reliability, period of repayment. This method for optimizing the age structure of the construction machinery set is based on using the method of linear programming. Practical recommendations are also included.
Increase Pressure and Homogeneity of Die Castings from EN AC 47100 Alloy
Authors: Gaspar Stefan , Pasko Jan
Published: January 2015

In the pressure die casting process, a great attention is paid to a die castings quality improvement. This quality has to be ensured with a great reliability and, at the same time, it is necessary to apply control methods to a technological process which provide a complete picture of a die casting process as well as internal quality of the produced die castings. It requires control of the present technological factors of a pressure die casting process. The contribution deals with the effect of die casting plunger velocity inside a filling chamber on mechanical properties of a die casting product from EN AC 47100 alloy.
Carrying Capacity Analysis and Numerical Simulation of Steel Reinforced Concrete Based on ANSYS
Authors: Luo Xue Song , Gan Chun , Xu Min
Published: January 2015

Application of a very wide range of engineering and construction of concrete beam, generally by the concrete and steel components, plays an important role in civil engineering. The unit adopts the structure of what will maximize the load, is the key problem in the design of concrete beam. This paper analyzes the structural characteristics of the Steel Reinforced Concrete and the bearing capacity, the design of a new type of structure. Application of ANSYS software to carry on the numerical simulation to it, and the concrete materials with different strength grades were bearing contrast; through continuous optimization of steel and concrete structure, complete the optimal combination between material, find Steel Reinforced Concrete structure best, and eventually realize the reasonable design of concrete beam.
First-Principle Study on the Structural Phase Transition, and Electronic Structures of Cobalt under Pressure
Authors: Zhu Hong Bo , Tan Dun Qiang , Xiong Zhi Huang
Published: January 2015

The structural phase transitions and electronic structures of Co are investigated by using the first-principles calculation based on density-functional theory (DFT). Our calculated equilibrium structural parameters of Co are in good agreement with the available experimental data and other theoretical results. The calculated phase transition hcp-Co → fcc-Co at ca. 125.25 GPa. The magnetic moment of hcp-Co and fcc-Co drops to zero at 155 GPa and 77 GPa, respectively.
Study on Energy Balance of Three-Cylinder HCPE
Authors: Zhang Hong Xin , Han Fa Sen , Shu Pei , Ma Yong Zhi
Published: January 2015

The energy balance of Hydraulic Confined Piston Engine (HCPE) is the key to understanding its working mechanism, improving its efficiency. The working principle of HCPE was presented, and the energy balance for the rated condition and application characteristics for the full conditions were also studied. Taking the low thermal value of fuel into account, the percentage of energy loss related to combustion is 54.99%, the percentage related to friction is 5.59%, the hydraulic loss is 1.92% and the other losses are 1.10%; the efficient work is 36.40%. The efficient work and the loss related to combustion are similar to those of a hydraulic free piston engine and medial speed diesel engine.
The Research Progress of Intra-Row Mechanical Weeding Technology of Dry-Land
Authors: Wang Hong Chang , Tong Jin
Published: January 2015

The farmland weeds directly affect the crops yields, and the intra-row weeds are more difficult to eliminate than inter-row weeds. With the harm of chemical weeding technology cognition by people, the growth of awareness of environmental protection consciousness and food safety, the non-chemical weeding technology get more and more attention. Mechanical weeding as a good alternative method get more attention, and the intra-row intelligent mechanical weeding technology becomes a hot spot of research. The research on intra-row intelligent mechanical weeding technology of China have a large gap compared with developed countries. In this work, the current research of intra-row mechanical weeding technology of developed countries and China was reviewed, and the development trend of intra-row intelligent mechanical weeding technology of China were prospected. The universities and research institutes should be encouraged to learn from foreign advanced technology and the design concept of intelligent weeding equipment, increase the investment in intelligent mechanical weeding technology research and promotion.
Signal Processing and Engineering Application of Ground Penetrating Radar (GPR) Based on Multi-Wavelet Transformation
Authors: Shu Zhi Le , Huang Shan , Liu Bao Xian , Xu Ke
Published: January 2015

In tunnel lining quality testing and advanced geological forecasting, the main concern is the local signals, such as the position and form of defects or the unusual mutations; while all kinds of filtering methods based on Fourier transformation reflect the overall characteristics of the signals, but can not describe the time-frequency local properties of the signals; however, the characteristics of the multi-resolution based on the wavelet transformation have the ability to show the local characteristics of the signals in terms of the time domain and frequency domain; based on the analysis of multi-wavelet theory, the paper infers the decomposition and reconstruction of CL4 multi-wavelet, discusses the necessity of multi-wavelet preprocessing and conducts the equalization treatment of CL4 multi-wavelet, realizes CL4 balanced multi-wavelet threshold filtering algorithm based on the application of MATLAB language programming, and compares with the traditional filtering effect based on Fourier transformation; the results show that the both conventional filter and CL4 balanced multi-wavelet filter can clearly distinguish the unusual targets; but the target characteristics through multi-wavelet transformation are enhanced; the lineups are clearer, the noises are removed more thoroughly, the signals are reserved more completely and the images become “clearer”. The multi-wavelet transformation provides good assistance for improvement in GPR image resolution and the definition of the target detection image, and achieves better filtering effect.
A New Pre-Treatment with Phosphoric Acid and Hydrofluoric Acid of Electroless Ni-P Plating on Mg Alloy
Authors: Xie Zhi Hui , Zhou Jun Li , Xiang Shu Rong , Chen Fang
Published: January 2015

In order to develop a chromium-free pre-treatment method for electroless Ni-P (ENP) plating on magnesium alloy from an acidic plating bath, several various pickling and activation processes were studied in the present work. The surface morphologies of the matrix before and after etching or activation as well as the surface and cross sectional appearance of the Ni-P coatings were observed by scanning electronic microscope (SEM), while the elemental compositions were detected by energy dispersive X-ray spectroscopy (EDS). Those surface characterizations along with the scribe and grid testing results showed that the coatings obtained from etching only in H3PO4 solution display poor adhesion due to the existance of an interlayer between the matrix and the coatings. When fluoride was added into the pickling solution, the adhesion of the Ni-P coatings was also unsatisfactory because of the bad mechanical interlocking. By comparison, the Ni-P coatings obtained from pickling in 400 cm3·dm−3 H3PO4 solution followed by 10 cm3·dm−3 HF activation exhibit good characteristics in both adhesion and anti corrosion. The polarization test in 3.5wt.% NaCl aqueous solution showed that the corrosion potential (Ecorr) and corrosion current density (Icorr) of the new achieved coatings increases positively from −1.65 V to −0.87 V and decreases remarkably from 2.09 mA⋅cm−2 to 3.58 μA⋅cm−2, respectively (both compared with the bare Mg alloy).
Solutions for a Class of the Higher Diophantine Equation
Authors: Kang Xue Fu
Published: January 2015

We studied the Diophantine equation . By using the elementary method and algebaic number theroy, we obtain the following concusions: (i) Let be an odd number, one necessary condition which the equation has integer solutions is that contains some square factors. (ii) Let be an even number, when , all integer solutions for the equation are; when , all integer solutions are ; when the equation has no integer solution.
Research on Scales Reflecting Cup Based on Scheme Macro Language Programming
Authors: Huang Zhi Qin , Huang Li Pu , Zhao Lian Di
Published: January 2015

The increasing demand for energy, non-renewable energy storage on Earth drastic drop in the new energy is in exploring the application stage, humans had to find a way for existing energy saving. LED (Light Emitting Diode) as a fourth-generation light source and its high photoelectric conversion efficiency, environmental protection, long life, the application of many changes and other advantages of the various countries on the national lighting issues[1]. This paper researched scales reflecting cup and Scheme macro language programming briefly, explained the program about scales reflecting cup written by Scheme macro language and the process of using TracePro software to product model briefly, then compared with traditional reflecting cup and analyzed.
Verification of the Possibility of the Use of Secondary Raw Materials of Tubular Solar Panels as Fillers of Polymer Industrial Floors
Authors: Hodná Jana , Petranek Vit , Dohnalkova Bozena
Published: January 2015

The article reports on a hot topic over the last few years and the issue of recycling and further use of secondary raw materials from the solar panels. Recycling of solar panels is very difficult and complicated. Secondary materials that recycling generated so far have not found a application and their using is still not fully resolved. The research conducted on Brno University of Technology, Faculty of Civil Engineering (BUT) now being developed polymer materials used for industrial floors. These materials were incorporated secondary materials as fillers. It was thus replaced by a filler made from natural materials, which the Czech Republic is still declining. In the following text, which builds on earlier publications describe the procedures and results of new tests, which were conducted on these fuels, which confirms the possibility of the use of glass from solar panel in industrial polymer flooring systems.
L-Proline-Catalyzed Synthesis of Amino Thiazoles
Authors: Li Zhi Jie , Lu Dong Ming , Guo Li , Zeng Qing Le
Published: January 2015

An L-proline-catalyzed synthesis of amino thiazoles is described here. Amides and 2-mercapto thiazoles were used as the starting reagents. Various reaction conditions were screened, and the scope of various amides and 2-mercapto thiazoles has been examined. Most of the substrates gave high yields. Compared with traditional synthetic methods with transition metal as catalyst, this protocol uses organocatalyst L-proline. It will reduce environment pollution and save the synthetic cost.
Multi-Objective Optimization of Stacking Sequences for Laminated Composite Beams by Genetic Algorithm
Authors: Karaçam Fatih , Timarci Taner
Published: January 2015

In this study, multi-objective optimization of stacking sequences for laminated composite composite beams is studied for simply supported boundary conditions. A unified three-degrees-of-freedom shear deformable beam theory is used for analytical solution and genetic algorithm is used as optimization technique. By use of two different parameters such as the deflection and frequency together in a pre-defined fitness function, optimization process is carried out in order to maximize the fitness function. Initially, the deflection, frequency, fitness function values and corresponding stacking sequences are presented for various number of layers and increment of fiber orientation angle. The variation of the fitness function with respect to deflection and frequency depending on the number of generations are presented.
A Kind of Color Calculation Method of Light Beam Hologram Papers Presswork
Authors: Liu Yu , Zhang Ya Yuan , Huang Min , Wu Xian Yao
Published: January 2015

By using printability tester for printing on ordinary white cardboard and light beam hologram paper, measuring spectral information and chrominance information of the two samples, and then perform spectral fitting by analyses their color characteristics, The aim of this research was to propose one method for color calculation of printing on light beam hologram papers, according to the color information of ordinary white cardboard.
Study of Color Reconstruction of Color Holography
Authors: Tian Quan Hui , Yu Hai Qi , Zhao Dao Mu , Liu Yan
Published: January 2015

The relationship of color display system and digital color reconstruction of color holography is discussed based on CIE color matching theory. With the general color display space-sRGB, this research calculated the three primary wavelengths as record and reconstruction wavelength. Based on the relationship between the RGB color values of object and the amplitude of object light, the computation method of three recording primary color and the color values of reconstruction color hologram is presented and verified by the experiment.
Novel Image Color Difference Metric with Chromatic Adaptation Transform
Authors: Lu Liang , Yu Ming Wei , Wu Guang Yuan , Zhu Ming
Published: January 2015

Existing image color difference metrics are not appropriate to predict the preserved image color difference when comparing images under mixed illumination. We propose a novel image color difference metric that apply the chromatic adaptation into image color difference model to obtain an objective image color difference. Meanwhile, a proper workflow for evaluating image color difference based on this metric is proposed. Subjective and objective experiments are properly designed and processed. The results indicate that the proposed image color difference metric is able to predict the preserved image color difference well.
Comparative Studies of Two Metameric Black Spectral Dimension Reduction Methods Based on Color Difference Optimization
Authors: He Song Hua , Chen Qiao , Zhang Gang , Duan Jiang
Published: January 2015

Two new metameric black spectral dimension reduction methods based on color difference optimization are presented, and dimension reduction effects are compared in colorimetric and spectral accuracy. The method one decomposes firstly the original spectrum into the basic spectrum and the metameric black spectrum using R-matrix theory, and then determines respectively the basis vectors which express linearly the basic spectrum and the metameric black spectrum. The method two applies firstly the principal component method to the original spectrum to get the first three eigenvectors as basis vectors of the basic spectrum, and then calculates the fundamental spectrum using tristimulus values and basis vectors of original spectrum. Results of experiment show the low-dimensional linear model built by method two can improve spectral and colorimetric accuracy, and satisfy the requirement of spectral color reproduction.
Influence of the Parameters of Light Source on Observers’ Visual Performance
Authors: Huang Min , Zheng Zhen , Jiang Huan , Liu Hao Xue
Published: January 2015

In order to investigate the influence of the light source with different illuminance and color temperature on the observers’ visual performance, five kinds of light sources were selected, named LED1, LED2, LED3, LED4 and Fluorescent, which have different illuminance or color temperature. 3 series of visual experiments, such as the ‘find out’ experiment, compared experiment, dose experiment were designed.13 observers were organized to carry out the experiment in the given time in turn. The reading rate, accuracy , index of mental capacity (IMC) and visual comfortable level score were analyzed, the results indicated that the light source with the lower color temperature and medium illuminance has the best visual performance and comfortable visual feel.
Growth and Holographic Storage Properties of Zr:Mn:Fe:LiNbO3 Crystal
Authors: Nie Yi Ran , Sun Zhi Hui , Chang Jiang , An Li Juan , Liu Zhuang
Published: January 2015

Doping different concentration of ZrO2in Mn:Fe:LiNbO3crystals, a series of Zr:Mn:Fe:LiNbO3crystals were grown by the Czochralski method. The infrared transmission spectra and the photo-damage resistant ability of the crystals were measured. The OH-absorption peak of Zr (2mol%):Mn:Fe:LiNbO3crystal shifts to ultraviolet. The photo-damage resistant ability of Zr (3mol%):Mn:Fe:LiNbO3crystal is about three orders of magnitude higher than that of Mn:Fe:LiNbO3crystals. The diffraction efficiency, response time of Zr:Mn:Fe:LiNbO3crystals were measured by two-wave coupling experiment. The response time of Zr (3mol%):Mn:Fe:LiNbO3crystal is only one tenth of that of Mn:Fe:LiNbO3. The mechanism of OH-absorption peak shifting and improvement of holographic storage properties was discussed.
Physical Measurement and Spectral Reproduction of Human Skin Color
Authors: Wang Yu Zhao , Luo Ming Ronnier , Muhammad Safdar , Liu Hai Yan , Liu Xiao Yu
Published: January 2015

This work forms part of large project for measuring the skin colors. This topic has been historically extensively studied due to the strong need from the photographic, digital imaging and medical applications. However there are still many unresolved issues, for example the measuring accuracy and the difference between different measuring methods. The paper focused on one of the measuring methods: camera. The goal is to develop PCA methods to reconstruct the reflectance from images captured by a camera, and the result shows that using three components is enough to acquire high accuracy, and it is possible to have a single skin model to predict all the available skin colors.
An Automatic Calculation Method of MTF and the Application in Blurred Images Restoration
Authors: Yuan Yuan , Yi Yao Hua , Miao Min Jing
Published: January 2015

Modulation transfer function (MTF) is a comprehensive index for the objective reflection of the quality of the imaging systems. In the field of image processing, the slanted-edge method is usually adopted to compute MTF for images. However, the sub-images with slanted edges are extracted from original image by subjective judgment and manually operation, which is bound to lead to inefficiency of calculation, low accuracy and instability of results with the participation of humans. Aiming at the above problem, this paper presents an automatic MTF calculation method for blurred images and applies it to the process of image restoration by developing a two-dimensional MTF filter and utilizing it into conventional restoration methods such as the Wiener filtering, least squares filtering and Lucy-Richardson algorithm. Experiment results indicate the proposed method achieved an automatic, fast and accurate MTF computation for blurred images, and MTF-based restoration methods were superior to traditional ones in restoration effects.
Spectral Separation Method for Multi-Ink Printers Based on Color Constancy
Authors: Liu Qiang , Wan Xiao Xia , Liu Zhen , Sun Peng
Published: January 2015

Color constancy is a key metric for evaluating the color reproduction performance. This contribution proposed a color constancy based spectral separation method for muti-ink printers from the prospect of color perception. Basing on our previously developped spectral printer modeling workflow, a novel color constancy based spectral separation method for muti-ink printers was proposed, which achieved high-level color-constant color reproduction.The experiment results shows that the workflow described in the paper not only could makes full use of device gamut, but also improves the comprehensive color constancy performance obviously. Averagely speaking, the Color Inconstancy Index of reproduced colors is reduced from 2.884 △E00 to 2.016 △E00 , while maintaining reasonable spectral and colorimetric reproduction accuracy.
Extracting Golden Area from Image Based on Canny Operator
Authors: Wu Ying , Zhao Xiu Ping , Jin Yang , Zhang Xi
Published: January 2015

This paper researched application of Canny algorithm on the color separation of golden image , to generate a separated golden image plate base on the extraction of golden area, so as to get the effect more closer to the real metallic. Canny algorithm is based on the gray-scale image segmentation algorithm. The image is mapped from RGB to Lab color space. According to the color attributes of b, the golden target regions are extracted using Canny algorithm. But it’s difficult to get the closed target boundary outlet by Canny algorithm, so this paper modified image segmentation algorithm. Firstly, the image is filtered by Canny operator; secondly, small areas on the Canny processed image are removed by using some pre-determined threshold value.; then processed the image through using smoothing and sharping method so to make inner area of image more smooth meanwhile improving boundary sharpness. The experimental results showed that the method based on Canny operator is very suitable for golden area extraction from a image. The golden target-regions can be closed boundary outlet, which makes the golden areas are more accurate and continuous.
Research on the Algorithm of Defect Feature Extraction in Trademark Printing
Authors: Chen Yu , He Bang Gui , Gu Wen Juan
Published: January 2015

A defect feature extraction algorithm which depends on the separation and subtraction of color image and mathematical morphology is proposed in this paper, based on the defects in trademark printing processes, such as smudges, pin holes, misprints, misting etc. The difference images of each monochrome are operated with morphology methods and then the defect information of high precision printing processes in colorful trademark, such as shape, boundary contour, quantity, size and location etc, are extracted and recognized with suitable structure elements. The defect extraction algorithm is programmed and run by MATLAB and the results validated the high speed and precision of the algorithm about extracting some kinds of defect information in color trademark printing processes. The algorithm has met the real-time requirements of defect feature extraction in trademark printing processes. This research laid a theoretical foundation for researching and developing the color trademark quality detection system.
Research on the Evaluation of Digital Prints Quality Based on Noise
Authors: Chen Ni , Wang Qiang , Yang Ping , Xu Jun Long
Published: January 2015

With the development of digital printing, the needs for evaluating digital printing increase. In this study, the factors affecting the quality of digital prints are analyzed, and a set of digital prints noise detection system, test charts and evaluation methods are established by decoding the formation mechanism of the noise. Experiments showed that the noise had been affected by the type of paper, the image forming method of digital printing, the toner particles closely related in particular. As a result, this study can be used to select and optimize the printing’s outputting resolution to ensure printing quality based on subjective and objective evaluation the noise of digital printing.
Research on Chinese Natural Language Query Interface to Database Based on Syntax and Semantic
Authors: Li Zhi Jiang , Li Jin Kai , Ning Wu Xia
Published: January 2015

The query of database must rely on professional query language, which is difficult to grasp for ordinary users. Natural language query interface (NLQI) can be applied to solve this problem with better human-computer interaction and intelligence. However, current natural language understanding technology is not mature. Though the query sentences’ structure is fixed, it is also difficult to accurately convert query sentences into understandable database query language for computer. Therefore a method of designing NLQI based on syntax and semantic analysis is proposed in this paper. First of all, Maximum forward and maximum reverse matching algorithms are used to analyse sentence by part of speech (POS) template, which is able to demonstrate the syntax relationship among the words. After syntax analysis, query conditions and targets are identified. Then, single conditions and targets are analyzed to relative standard forms by the relationship among entity, property, connect verb and unit. At last, these standard forms are transformed to SQL sentence. Regarding printing ERP system as experimental subject, experiment is done in this paper. The result shows that the method proposed in this paper can meet the needs of natural language query, and has a good transform effect for combination, omitting and other complex sentences.
Research on E-Book Application Interface Based on Mental Model
Authors: Zhang Jie , Wang Qiang , Shi Yan
Published: January 2015

Mental model is the key to meet user’s needs, improve effectiveness and reduce critical errors of the interaction in the e-book application interface development. Constructing app function rules based on mental model is a research focus in menu interface design of e-book application. In this paper, college students were selected as target user group with comparison between light users and heavy users. By interviews and observations on users’ behavior of reading e-book and paper book, thus a scheme of function definition of e-book app based on users’ goal and behavior needs was formed, which can be applied to construct interface layout based on college students’ mental models, thus be propitious to enhancing user experience.
Design of Android-Based YUV Video Player
Authors: Si Zhan Jun , Yuan Fei , Zhao Yong Guang
Published: January 2015

This article elaborates the color space and sampling format of the YUV. By calling SDL, a YUV video player is designed based on Android. The research uses two video testing sequences provided by VQEG. The player is debugged on a Sony Tablet which has the Android OS. Having done some tests, the result shows that the sequences run smoothly via this app. At the end of the article, some future implication of the YUV player has been discussed and the study also serves as a basis for the development of android-based video quality assessment platform.
Application on Gravure Plate-Making Method in Printing Transparent Conductive Film
Authors: Deng Pu Jun , Lu Jian Dong , Wang Yu
Published: January 2015

The transparent conductive film (TCF) is the conductive material with higher light transmittance and good conductivity in the visible light range. Up to now, it is popular to print transparent conductive film with metal grid. From the perspective of making transparent conductive film by gravure printing, the printing effect of the fine lines on the TCF is analyzed by diverse gravure plate-making method. According to the requirements of the fine lines and conductivity for TCF, the two kinds of plate are made respectively by laser ablation method and laser engraving method, and applied respectively in proofing. The advantages and disadvantages of the two plate-making methods are evaluated, according to the analysis on the line width, conductivity and light transmittance of the TCF. The research results show that the laser ablation method can obtain the good electric conductivity and light transmittance of the TCF, but a relatively larger printing line width, the laser engraving method can get better relatively small line width, but the poor conductivity and light transmittance. So, the plate-making process needs to be improved.