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Paper acidification has become a serious problem in the world and deacidification is an effective way to extend the life of the paper documents. This essay introduced the acidification of the paper documents and the regular methods of deacidification at present. It surveyed the deacidification technologies in Europe and America countries and the progress of decacidification research programs in China, and then proposed the opinions on R&D and promotion of paper document acidification technology in China.

With rapid increase of waste paper recycling, more and more researchers focus on the advanced technologies of sorting impurities form waste paper. The principals of main identification and sorting technologies are introduced in this paper, whose advantages and disadvantages are discussed. Because of importance of sorting technologies based on near-infrared spectroscopy, we emphasis its principle, application and research status etc.. At last, research and development tendency of identification and sorting technology are prospected.

In this article, Fenton oxidation treatment technology was employed to the improving of quality of post treated wastewater from pulp & paper mills in order to increase the recycling ratio of final treated wastewater. The reaction conditions were optimized through single-factor experiments and the removal of color were tested for the optimizing. It was found in this study that the color of Fenton oxidation treated water was variegated with the extending of settling time. The optimized conditions were: Dosage of H2O2 was 682.1mg/L(30% m/m), 1.5 times theoretical consumption, 205mg/L FeSO47H2O (H2O2:FeSO4=15:1), the initial pH and the reaction time were 4.5 and 40min, respectively. The removal of the color and COD were 51.3% and 80% after Fenton treatment. GC-MS analysis shown that the contents of organic extracts and most of organic compounds reduced significantly after the oxidational treatment.

Paper industry produces large amounts of sludge with about 65wt% moisture content. Due to its complex composition, the charge of traditional disposal method is high and easy to bring about secondary pollution. In this paper, the influences of temperature, oxidation coefficient and residence time on the performance of supercritical water oxidation (SCWO) of paper mill sludge were investigated. The results show that SCWO can almost completely eliminate organics in sludge and obtain transparent liquid products meeting relative national standards at 550°C, 5min with an oxidation coefficient of 3.0. However, during this process, TN changes to NH3-N, so NH3-N in liquid products increases with operation parameters, indicating the recalcitrant nature of NH3-N, and which needs further treatment.

The combustion of paper mill sludge and bituminous coal in air was analyzed using a thermogravimetric instrument. TG and DTG curves for the blends lies between that of the individual fuels, and the main combustion characteristics of blends depended on individual fuels and followed the weighted average. As the blending ratio of paper mill sludge was increased from 10% to 90%, the ignite temperature (Ti) decreased from 529.6°C. to 275.6°C., and residual weight increased from 19.28% to 47.39%. The TG profiles of sample were almost the same at different heating rates, however there was a big difference between the DTG profiles. The maximum weight loss rate of sample increased obviously with the increment of heating rate. This work contributes to the comprehensive understanding of paper mill sludge and bituminous coal combustion and development of co-combustion technology.

Paper cutting, as an ancient and unique Chinese characteristics of the folk traditional culture elements, comes from people's daily life, which reflects people's the most simple pursuit and yearning for a better life , is an embodiment of a traditional concept of creation in life. As the time goes on, the full integration of folk paper-cut with local culture and a variety of unique styles embodies the concept of creation and the origin of cultural spirit is a great help to the modern design. With the exploration of paper-cut culture, this paper researches the modern product design, inspirates from its creation technique and art, in order to inherit the ancient folk culture, at the same time, gives some help to the product design in the new era.

Based on the analysis of the concept of green technology innovation capability, this paper not only structures the evaluation index system of green technology innovation capability in pulp and paper enterprises, builds the evaluation model of green technology innovation capability for pulp and paper enterprises based on Support Vector Machines with Radial Basis Function kernel, but also achieves the optimization of kernel function parameters, penalty factors and insensitive parameters based on a heuristic algorithm for tuning hyper-parameters. This model is more suitable for pulp and paper enterprises to evaluate green technology innovation capability, compared with the evaluation method of BP neural network.

This research were examined the spinning processes of paper mulberry yarn and also investigated the physical properties of paper mulberry yarn. The results show that a possibilities of spinning of paper mulberry fiber into yarn which is a longitudinal view similar to that of cotton. An average yarn count, tenacity and elongation are 1,022 tex, 66.39 cN/tex, and 17.80%, respectively. These results represent the beginning of the research to rescue traditional knowledge, combined with the possibility of the introduction of a new textile fiber on the market.

This research were examined the characteristics chemical and physicalof paper mulberry fiber and also developed the spinning processes of paper mulberry yarn to make the fabric by weaving and knitting. The chemical composition of paper mulberry fiber was approximately 72.5% cellulose, while hemi-cellulose, lignin, pectin, and water-soluble were 17, 2.6, 2.3, and 5.6%, respectively. The characteristics and physical properties of paper mulberry fabric were also investigated.

The principle of offset printing is the graphic part lipophilicity and the blank part oleophobic hydrophilic. Based on the ink-water balance theory, this paper mainly discusses the base paper and the coating formulations of paper-based printing plate. In this paper the properties of the paper-based printing plate of the different coating formulations were detected and evaluated, meanwhile these plates were tested in the offset printing. Based on the detection of print quality, plate coating performance and the number of copies printed, the base paper and coating formulations of this plate was be determined. The results of this study for this plate have some significance in the actual production.

Paper-cut animation is rooted in Chinese folk culture, which is an important constituent part of Chinese animation. This article has analyzed the own artistic charm of paper-cut animation, from the early traditional manufacturing method and its insufficiencies as well as the questions we faced, to details of the new manufacturing method after the application of modern computer technology to the paper-cut animation. Also the article emphasizes the introduction of manufacturing advantages after the computer technology applied to the paper-cut animation, as well as discussions on application value of paper-cut animation in business and service domains, etc.

The drying section of paper machine is not only the major energy-consuming parts of the papermaking process, but also one of the main bottleneck restricting the speed, yield and paper quality. So the research on the drying section has attracted much attention at home and abroad. In view of the traditional steam dryer shortcomings, this paper first introduces two kinds of improvement measures —— the tubulator bar and the siphon which can improve the efficiency of the traditional steam dryer. With the development of the paper industry, domestic and international research on the new type of paper drying technology has achieved some success. Then, we analyse their working principle and characteristic, and conclude that multi-channel dryer has a broad research and application prospects.

The paper wooden compound pallets are produced through the processing and assembly by using particle board, paper tubes and PE coated paper board as raw materials. Comparing with traditional wooden flat plate, the new type of green environmental protection pallets has many advantages such as high strength, light weight, low cost, waterproof, anti-moth-eaten, no need fumigation, etc. is an ideal green transport packaging materials for export commodities. The paper discusses and probes into the process and technology of paper wooden compound pallets.

Paper electromagnetic drying technology is a new paper drying technology different from traditional steam drying. Today, environmental pressure deteriorating, energy crisis approaching, doing researches on paper electromagnetic drying technology has a special meaning, especially to high speed toilet paper machine which is truly needed and has a vast developmental potential. This thesis is based on electromagnetic dryer and steam dryer study. And the changes measured in the experiment at diverse temperatures and quantities in the experiment has shown a higher efficiency of electromagnetic drying technology than conventional steam drying technology.

Recycling of waste paper is one of pop topics of pulping and papermaking industry. Deinking technology is the key of recycling of waste paper. It is briefly introduced that methods of waste paper deinking and mechanism of deinking and constitute of deinking agent.

It is an important factor that the paper tension for web press printing and roll paper manufacture. Especially commerce web press is the more important. The commerce web press has not only the first tension control, but also the second tension control. The second tension control would control tension wave restrict accurate bound. The simulation method was discussed about paper tape tension the second tension control on some problems of high speed Web press controlling system in actual adjustment course, and different respond graph was obtained on the different controlling parameter by MATLAB and controlling system capability target. Intuitionistic and exact foundation was offered for system analysis, comparison and choice arithmetic, which benefits the further research.

Paper pulp molding products meet the product-protecting requirements and operating requirements through all kinds of structural forms in the application of product packaging, fixation and product buffering shockproof. Paper pulp molding products structural design influences the buffering performance of paper pulp molding products and packaging requirements of the products, therefore influences the packaging structure, processing production, mold design and processing method of paper pulp molding products.

Low density printing paper was widely used in printing best-seller at present. Besides of high bulk, good stiffness, soft color, it also had some advantages, such as reducing user’s load, protecting eyes, extending the storage time etc. Quality index of domestic low density printing paper was lower than foreign index. The gap mainly expressed on tensile index specially. This study used Aspen BECMP as main pulp, as a result of its higher strength, lower cost and other advantages comparing with PRC-APMP. Here we discussed three pulps ratio to make low density printing paper. The results of experiment indicated that using Aspen BECMP was able to make low density printing paper by adding certain amount chemistry pulp. Moreover, the best bulk value can up to 2.45cm3/g, and the tensile index was 36.08Nm/g.

This paper presents a distributed machine vision inspection system, which has a large field of view (FOV) and can perform high precision, high speed real-time inspection for wide paper sheet detection. The system consists of multiple GigE Vision linescan cameras which connected though Gigabit Ethernet. The cameras are arranged into a linear array so that every camera’s FOV is merged into one large FOV in the meantime the resolution keeps unchanged. In order to acquire high processing speed, the captured images from each camera are sent into one dedicate computer for distributed and parallel image processing. Experimental results show that the system with fine detection capability can satisfy the requirements of real time detection and find out the defects on the production line effectively.

The purpose of this resarch was investigated the air-oil temperature field distribution under air-oil lubrication and oil lublubrication, meanwhile also study the air-oil lubrication effect under different air velocity inlet the bearing cavities of the high-speed paper machine dryer section. Base on the CFD theory, the temperature field of CARB bearing outer ring and the velocity field of the bearing cavities were simulated by the FLUENT software.Result show that air-oil lubricatin can reach the same cooling effect is contras with oil lubrication in the same heat production by roller; the best air-velocity value of air-oil lubrication system is obtain for the change of temperature and pressure in bearing cavities. It is confirm that the air-oil lubrication is viable in the high-speed paper machine dryer section.

The physical structure and chemical properties of coating layer have an important influence on transferring and setting of the printing ink. In this study, the effect of pigment on coating layer structure and surface properties was investigated. The surface topography was explored using scanning electron microscopy (SEM) and atomic force microscopy (AFM). The findings indicated that the pigment affected the pore size, depth and distribution of the coated paper surface. The conclusions were drawn that coating could improve coating surface topography and calcium carbonate pigment compared with kaolin pigment was not good to the paper surface properties, which resulted in high roughness, low paper gloss, high ink absorption and low paper surface efficiency.

For the family embarrassment and annoyance brought by the replacement of slippers when someone pays a visit, a cutting paper tape machine for sole coating was designed. Based on the detailed calculation and preliminary drafted general design scheme, the electric motor was chosen, the transmission ratio was distributed reasonably, the structural style and related parameters of worm gear were designed, and the stress strength was checked. Based on these, the three-dimensional model was established, through simply simulation, the scheme was verified and improved, and the parametric design was realized. Thus, one kind of convenient and practical cutting paper tape machine for sole coating is provided for families and high-grade places, which is greatly convenient to visitors.

The article introduces each component of feeding paper machine of printing press which are press feet mechanism, paper separation mechanism and paper transfer mechanism, the function and the principle of work. Each mechanism is undertook a variety of designs and we choose the best design of each structure according to its functions. Design adopted is as follows: Press feet mechanism adopts the cam-linkage mechanism; Paper separation mechanism adopts the cam-linkage slider mechanism; Paper transfer mechanism adopts the conjugate cam-linkage slider mechanism. The machine is simple, practical and reliable.

The performances of three kinds of water-based pigment inks were compared and studied, which include self-made ink, original printing ink and compatible ink. Art paper, matte paper and white card paper were used as the substrates. Testing the contact angle of ink droplets, the spreading, wetting, and drying rate of inks were investigated. The color density and CIE L*a*b* values of the printed samples were measured, to evaluate the hue error and color gamut. The water resistance was studied with corresponding experiments. The result indicates: self-made water-based pigment ink has the smallest contact angle on coated paper, showing a faster drying rate. Its color gamut is similar to the original printing ink on art paper, and the hue error is low. Through the water resistance test, the color density measured on art paper and matte paper had no changes, without color dissolving and color fading, showing good water resistance applicability.

The culture of Chinese white spirit is time-honored, and it’s loved by all Chinese people, so it’s also important of white spirit packaging. The paper puts forward a new and green solution of white spirit packaging with paper bottle, it’s made with mulberry/rice paper and animal blood. The paper bottle is light and green, and increases the white spirit’s nutrition value. There are several physical and chemical tests in the paper just to justify the new bottle’s performance. Physical performance test includes appearance defect test, compression and stacking test, impact resistance test, water impact strength test, permeability test and so on. Chemical performance evaluation includes stability, compatibility and endurance.

The object of this work is to evaluate the optimal process of stickies removal on steam-explosion pulping from recovered paper. OCC (Old Corrugated Container), offset paper and coated art paper are presented for steam-explosion treatment. The parameters tested by single-factor tests are: liquor, explosion pressure, heat preservation time, and the charge of sodium hydrate and sodium silicate. The criterion used to characterize the stickies removal efficiency is the consistence of macrostickies and DCS in pulp after treatment. The compositional analysis are achieved the optimal explosion conditions. The use of steam explosion would be desirable in dealing with recovered paper.

As one of the main emission sources of PCDD/Fs, the pulp and paper industry has always been public concerns. In China, the consumption of non-wood fiber as raw material of pulp accounts for a relatively larger proportion in the total productivity. Here, the unintentionally produced PCDD/Fs emissions of five Chinese non-wood pulp and paper mills were investigated. The results showed that the increment of PCDD/Fs after bleaching with chlorine was about 1.71-28.19 times in pulp and 3.96-28.82 times in wastewater based on the existing technologies. In order to reduce the unintentional production of PCDD/Fs, the BAT/BEP transformation program was proposed as cleaner production initiatives featured by less or free use of chlorine in bleaching process, and evaluated by reduction effects and costs. The study showed the application of Elemental Chlorine Free (ECF) sequences in bleaching process with improving technologies in other production stages would effectively decrease the generation of PCDD/Fs, other pollutant load as well as the water consumptions.

This paper studied some kinds of realization modes of speed chain compute, load distribution and operation aimed at the realization of paper machine driving system. The frequency conversion control system based on PLC cooperating with digital manipulator was brought forward. It was mainly made up of three parts: PLC, frequency converter and digital manipulator. It used PLC to realize digital speed chain and load distribution. And it exchanged data and parameters by communication through field bus network. The results indicate that the problems of speed chain compute, load distribution and operation were solved effectively by data gathering and computing with PLC, so it is a driving system of high performance.

This article introduced the superwater’s action principle for controlling slime pulp and its virtues. And then it studied its bactericidal and ameliorative actions in close system of whitewater. The article also compared superwater with other conventional bactericides. At the use level, concentration, actuation duration and bactericidal ability, superwater system excelled conventional bactericides. Furthermore the superwater can improve a series of problems in close system of whitewater. At last, a pilot scale test about superwater system has been carried out in a packing paper company. The test indicated that the superwater in whitewater can increase yield and save cost.

Fluorescent whitening agent is relatively small dosage in the coating, but it has great influence on the properties of the coating and ink-jet printing qualities. With the increase of fluorescent whitening agent dosage, the PH of the coating rose but the viscosity was hardly to change. The brightness of coated ink-jet printing paper and color density of the printing image firstly presented the trend of increasing then decreasing. What’s more, when the brightness of the coated paper achieved to the maximum, color density and contact angle properties were the largest. Chromatic aberration property of the image reduced from 1.87 to 1.75, when the addition of fluorescent whitening agent rose from 0.1% to 0.5%. While the dosage was rose to 0.9%, chromatic aberration increased to 2.15. The gloss of coated paper decreased with the dosage of fluorescent whitening agent increasing. In sum, fluorescent whitening agent can enhance the brightness of the coated paper as well as the printing properties. The results show that the best brightness and printing qualities of coated ink-jet printing paper are obtained, when the fluorescent whitening agent is 0.5%( relative to pigment).

It is very important to measure paper fiber density and equivalent diameter for pulp suspension as solid-liquid two-phase flow in fluid dynamics study. There are some kinds of ways to measure fiber density，but not be suit for pulp fiber density because of their limitations. By using kajaaniFS300 fiber analyzer provided by Mesto ltd company to compare and measure all kinds of fiber length, fiber coarseness, weight average fiber length can more accurately show the actual length of fiber. The results shows that it is apparently more appropriate to calculate fiber density by using fiber coarseness, weight-average fiber length and weight-average fiber width, and fiber equivalent diameter should also be calculated according to the same weight-average fiber length and weight-average fiber width.

In the papermaking process, improve the efficiency of dehydration is the most important part of the control system of the paper machine press section, in order to improve the the papermaking efficiency and the quality of paper, the paper analyzed, the shoe working hydraulic oil passage analyzed.

The work presented in this paper aims at developing a tool based on the LCA approach which could be used systematically for the environmental evaluation of Forestry(Pulp) and Paper-making industry,seeking a way to reduce energy consumption, product cost and find the opportunity and way to reduce the pollution load. So it should be controled in every link which is possible to generate radiation in the process from gain of raw material in forestation pulp making and paper making to processing of waste products to prevent and reduce pollution and realize sustainable development of the economic, environmental and human society.

Small motions will result in heavy influence to the production in high-speed paper machine, therefore, decoupling control is necessary. This passage Puts forward the opposite angles strategies to solve the function of decoupling aiming at solving the difficulty that occurs in practice, like the characteristic of hard-coupling and non-linear. According to the mathematics model of the flow box, decoupling the quantity of the two couplings in the processes. Meanwhile, Introduces the SIEMENS S7-300 PLC and the DCS system that is realized by the it.

Nano titanium dioxide particles were synthesized by drolysis of TiCl4 through the phase thransfer and pH of the system is adjusted by Na2CO3 At the same time, the particles were characterized by the Transmission Electronic Microscope(TEM) and X-Ray Diffraction(XRD).As the result, it is shown that the TiCl4 solution was transformed from n-octyl alcohol to deionized water phase and reacted with the deionized water at 55°C, the precursors of nano-TiO2—Ti(OH)4 was dried for 6 hours under vacuum at 70°C,then calcined 3 hours in muffle furnace at 400°C.At last, the TiO2 nanoparticles which is uniform distribution, weak agglomeration was synthesized. In addition, wastewater in paper mill treatment with TiO2 nanoparticles was studied by experiment. It is shown that suspended substance and COD in wastewater were brought dwon largely. The mechenism that wastewater was treated is disscussed.

The bio-drying characteristics and its influencing factors of paper mill sludge (PMS) were investigated detailedly, by means of the heat generated by aerobic degradation of the organic substances in the PMS. In the orthogonal experiments, the good results were achieved with the followed optimization technics: starch (25.0g/500.0g), sawdust (40.0g/500.0g), inoculation (15.0mL/500.0g) and KH2PO4(5.0g/500.0g). During bio-drying, the matrix temperature increased to 47.2°C within 12-24h rapidly under the given operation parameters, and the maximum was about 48.0°C. In the whole process the pH changed in the range of 6.11-7.87. The quantity of amylolytic bacteria reduced to the minimum in the first day, and the amylolytic bacteria grew well until the process of bio-drying finished. The ATP content was increased drastically in the first day and peaked in the fifth day, with the maximum ATP content was about 6.4×10-6μmol/g. When bio-drying of PMS was finished, the VS content and moisture content (MC) reduced from 58.4% to 49.5% and 62.2% to 50.3% respectively.

Combining with the production practice in the particular consortium of the paper mill, power plant and calcium carbonate fines factory, a new kind of united treatment technology is designed. The technology is mixing the waste pulp and waste scum with coal to finish the in-furnace desulphurization, spraying waste water to the flue gas to finished flue gas desulphurization and using waste hydrogen of calcium as absorb material. This method can comprehensive use of resource to reach a better economic effective and social benefit. It reduces the processing cost and avoids city environment pollution. The three factories have mutually pleasant business. The technology opens up a new effective approach of desulphurization and can be good example to the same enterprises. An economical benefit is analyzed.

A device has been designed to measure the whole stiffness which is behalf of paper plate’s carrying capacity. When the device was working, one end of the paper plate was hold as a hand did, the other end of the paper plate was pushed to 15°angle from the horizontal surface, and the force on the paper plate was recorded. Comparing load-bearing performance, the whole stiffness is more accurate to reveal the differences of the paper plates.

Paper material has many excellent characteristics in architectural applications. Our main constructions for disaster rescue are temporary tents, board house and so on for a long time, so it is difficult to meet the psychological demands of the people in disaster area. According to Maslow's hierarchy theory of psychological demands, this paper analyzes people’s demands of physiology, psychology and social aspects in disaster areas, also sums up the exploration of paper material in architectural application, and finally summarizes that paper material is economy, flexible, safety, sustainable and so on.

Steel slag, a kind ofindustrial residues, is generated in the process of steel-making. Paper sludgeis the final material which origins from the treatment of liquid waste. Allthese resulted in a serious pollution of environment, how to achieve thecoordinate development among enterprise, environment and society become apressing matter of the moment. Based on this, Circular economy becomenecessary. Based on circular economy, the two kinds of industrial wastes weremixed to manufacture useful materials through carbonation in this research. Therequired raw materials were mixed by mortar mixer at the specified mixingratio. Then the mixture was transferred to a stainless steel mould formanufacturing of rectangular composite specimens. Only in this way, It is toshift from the paper maunfacturing and ironmaking and steelmaking industrywhich is over-consumption of energy and natural resources and very seriousenvironmental pollution to the industry which is less pollution and thedevelopment of multi-part cycle.

English, as one of the most important information carriers, has become the most widely used language worldwide, and its importance is increasingly prominent in each field of our society. Examinations are an important means of evaluating the level of English language learning and teaching outcomes. For the problems existed in traditional English exam, this paper research English online examination system intelligent test paper based on random algorithm. First, the design test paper constraints, including the question amount constraint, questions type constraints, knowledge point constraints, difficulty constraints, answer time constraints and so on; Then, using the linear congruence generator study of a random number generation, list recursive formula and describe parameters; Finally, using flow diagram to study random test paper process, for each step describing in detail. Advantages of random algorithm are easy to use, the disadvantage is not retrospective, applies to the number of exam papers and extraction requirements are relatively few cases.

The curriculum construction is a very important work leading to the excellent course. Processing Technology of Paper Box and Carton (including 32 class hours) is a new elective course to the printing engineering in our college. It is very important and necessary to construct the course in time. At first, the current states and difficulties were introduced in the paper, which was that teaching contents, teaching courseware and teacher team should be all improved. Especially, the teaching content proportion on both paper box and carton was set. And then the ideas and ways used for building up the curriculum system are presented as integrating the teaching contents, reforming the teaching mode and strengthening the teaching management. Finally, the significance of carrying out the teaching reform was put forward, and the achievements of course construction should be applied to the usual teaching work. The curriculum Processing Technology of Paper Box and Carton was reckoned as the excellent curriculum of Beijing Institute of Graphic Communication in 2013.

A statistical analysis is made on papers published in Geomatics and Information Science of Wuhan University from 2001 to 2010 in terms of the number of published papers, the statistics of key words frequency, the number of published papers of authors, the regional distribution of authors, the number of co-authored papers, the added number of paper authors and active author group. The research direction of geomatics and the scale and trend in which geomatics researchers have cooperated in past ten years is represented. It is reflected that the Journal has played an important role in the information transmission, experience exchange, talents training and the improvement and development of China’s geomatics cause.

Based on the study of dielectric response theory and equivalent circuit of oil-paper insulation medium, this paper deduces the exponential decay type return voltage function model.It also proposes that rhe function can be resolved with the application of optimization algorithm. Finally, the paper takes a return voltage curve which is tested by the oil-immersed transformer for example.Fitting results verify the accuracy of the calculation. Further more,it also explains that return voltage function model is reliable and practical. Therefore,the model plays a crucial role in the follow-up study of topological structure of equivalent circuit of oil-paper insulation.

Better security and environmental performance are manifested in the use of paper materials on children furniture; Paper materials are of excellent features in portability, convenience, affordability, air permeability and texture;Also introduces the craft process of paper materials in making children furniture, and illustrates the application of paper materials according to the children’s experience.

The genetic algorithm is a randomized search method for a class of reference biological evolution of the law evolved, with global implicit parallelism inherent and better optimization. This paper presents an adaptive genetic algorithm to optimize the use of BP neural network method, namely the structure of weights and thresholds to optimize BP neural network to achieve the recognition of banknotes oriented. Experimental results show that after using genetic algorithms to optimize BP neural network controller can accurately and quickly achieved recognition effect on banknote recognition accuracy compared to traditional BP neural network has been greatly improved, improved network adaptive capacity and generalization ability.

The system for automatic analysis of test papers needs a algorithm which is efficient and converges fast, Genetic Algorithm is just fit for it.The paper is mainly discuss the basic concept of Genetic Algorithm,three important Genetic operator, the general step of Genetic Algorithm, and introduction of the system for automatic analysis of test papers.We follow the coding,selecting,crossover and mutation of Genetic Algorithm,discuss the process of automatic analysis of test papers.

In this paper, we analyze the disadvantage of common generating test paper algorithm. An improved genetic algorithm (IGA) is proposed and used in auto-generating examination paper algorithm. We design the mathematical model of auto-generating test paper algorithm and improved the traditional GA fitness evaluation form. A computational study is carried out to verify the algorithm. Simulation results demonstrate that the performance of IGA can work efficiently than traditional ones.

This paper mainly make stitching technology of character in scrapped paper of printed file carry on research, which puts forward a stitching method in the light of character and image with multi-feature information in scrapped paper, mainly considering stitching same line character generally possesses similar horizontal projection region and projection center, it adopts human-computer interaction to semi-automatic stitching. First, we make image of scrapped paper binarization and small area filtering (with the exception of the boundary), after characters clustering, we utilize matching degree of pixels information of the left and right edges to make vertical stitching. This method can better tackle stitching and restoration of scrapped paper characters whose edge with segmented character. The scraped papers provided by the national undergraduate mathematical modeling contest were conducted experiment; the results indicate that this method is effective, with strong real-time property, robustness.

In order to solve the problem that the paper will be wrapped and distorted after being laminated by the paper laminating machine, an auto flip delivery mechanism of the paper laminating machine is designed. A set of flip mechanism is installed in the delivery part of the paper laminating machine for placing the small paper stacks right side up or side down, which effectively prevents the laminated paper from being wrapped and distorted. Comparing with manual delivery, it saves labor, reduces the number of employers and also reduces the cost of the enterprises. The effectiveness of the mechanism has been verified in its actual application.