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In this paper, the performance of CCHP with optimal operation were investigated, and theimpact of the time-use-price were analyzed. The results shown that the operation cost can beobviously save with optimal operation strategy than the HET strategies. The main reason to reduceconst is more power generation by the generator, it means that the generator efficiency is higher, sothe primary energy ratio got obvious improvement and carbon dioxide emissions are also reduced inoptimal operation. The TOU can reduce the operation cost, and induce more purchasing electricity ofCCHP in peak-off period. But the primary energy ratio almost did not improve, and carbon dioxideemissions increased in the TOU case.

Reducing vehicle pollutant emissions and fuel consumption is becoming more and more important challenges, while lean-burning are a promising development. However, lean-burning may leads to other problems including combustion instability and incomplete combustion. Recently, laser ignition system has become an attractive field of research in order to replace the conventional spark plug ignition systems in the internal combustion engines to solve problem above. Moreover, methane was regarded as very promising fuel. Therefore, the objective of this article is to review the ignition and combustion characteristics of methane-air mixtures by laser-induced ignition.

With the development of computer graphics, real-time rendering-based VF: technology has been applied in more and more fields. LOD is the key technology in large-scale terrain rendering. In this paper, the basic concept of LOD is introduced briefly and some algorithms of LOD in use are mentioned and analyzed; secondly as one of algorithms of LOD, View-Dependent Progressive Mesh algorithm is studied and improved, the result of implementing the large-scale terrain’s LOD by using VDPM is presented. There are key technologies in LOD Large-scale terrain real-time rendering are researched. Relative technologies are presented such as: LOD of the terrain, visibility culling, and cracks eliminate, view-dependent refine, LOD error, technologies of texture etc. Using LOD technology, VR system can greatly reduce the; number of polygons produced in real-time rendering procedure. Finally, we do experimental design work based on the methods and techniques presented by this paper.

In this paper, we have designed two experiments to investigate the visual comfort of focus pulling for S3D video with different shooting configurations. The variables mainly includes:1) convergence setting ;2) the distance between camera and subjects;3) pulling direction of focus. Evaluation results showed that different convergence settings would affect the visual comfort during focus pulling obviously. With the increasing of convergence distance, the subjects would appear from inside to outside of the screen, and the visual comfort value of focus shifting would decrease. Our research can provide data analysis for improving the visual comfort and shooting technology of S3D videos.

In the present study, Fe-50at%Al/WC intermetallic matrix composite powder was produced through mechanical alloying (MA) followed by annealing treatment. The phase transformations, grain size, microstructure and thermal stability of the composite powder during milling and annealing treatment were studied. The results showed that a bcc Fe(Al) solid solution reinforced with nanoscale WC particles was formed through high-energy ball milling The grain size of Fe(Al) decreased and the lattice strain of Fe(Al) increased with increasing milling time. The as-milled Fe(Al)/WC composite powder had lamellar structure. The oxygen content of Fe(Al)/WC composite powder increased with increasing milling time. The phase transformation from Fe(Al) to Fe-Al intermetallic phases was related to the milling time of composite powder and could occure at temperature of 400°C.

Aim at the phenomenon of sidestep subsidence on surface by mining on the condition of thick unconsolidated layers and thin stratum,article bases on the theory analysis and calculation, and uses determining key strata and key strata flexibility calculation, and expatiates the characters of η, and makes it divide into subsection function. Contrast with project example and simulation test, it shows:if subsection function η is applied, then using it to forecast the quantity of surface subsidence that will be more approach to fact, which can syllabify explain phenomenon of sidestep subsidence on surface, and has definite meaning to coach locale.

Due to introduction of new vehicle models, an automobile manufacturing enterprise usually needs to make corresponding adjustments of the facility layout of the door welding workshop. On the basis of analyzing the production process and logistics characteristics of the welding line, the facility layout of the workshop is improved and the production logistics cost is reduced by using the SLP (Systematic Layout Planning) and internal logistics analysis method. Finally, a real production example is given to illustrate the effectiveness of the proposed method.

A FeAl/WC nanocomposite coating was produced by cold spraying of mechanically alloyed Fe/Al/WC composite powder assisted with annealing treatment. The microstructure and grain size of FeAl/WC nanocomposite coating before and after annealing treatment were characterized. The results indicated that as-sprayed Fe (Al)/WC nanocomposite coating presented a dense microstructure with lamellar structure. The phase transformation from Fe (Al) solid solution to FeAl intermetallics within as-sprayed nanocomposite coating occurred when annealed at 550°C for 25 h. The annealed nanocomposite coating was composed of nanograins of size ranging from 50-100 nm and the grain size of FeAl increased with increasing the annealing time. Moreover, the effect of annealing temperature on the microstructure of the FeAl/WC nanocomposite coating was investigated.

SWDC aerial camera series，developed and produced independently by our country, uses the automatic exposure to replace artificial manual exposure and the high precision fixed-point exposure to replace time exposure. So that we need our own design of perturbation site and the data interface which is suitable for the operating system of automatic exposure. What we should do is to research the things routes, north-south routes as well as inclined routes, and come up with computer algorithm after ascertaining the parameters of the aerial camera, measured area and plotting scale. In order to examine the perturbation sites, we have designed the algorithm and made it accessible.

Molded pulp material has been paid much attention for the cushioning package, yet there is no perfect method for evaluate the cushioning properties of different molded pulp configurations, which hampers the advance of molded pulp industry. In this paper an Equivalent Area Theory are put forward in order to study the cushioning properties of this material and the molded pulp pallet is taken as practical example. By experimental and theoretical analyses, the cushion coefficient and maximum stress curve of the molded pulp pallet is obtained, and a design method of molded pulp pallet is established.

The finite models of U-steel support, grid steel frame, hollow steel tube support and concrete filled steel tube support were established, of which mechanical property and influencing factor such as bearing capacity, support effect etc. was analyzed. Comparative analysis of economic benefit was carried out through research of material dosage and support effect index. The contractible joint for concrete filled steel tube was designed, and their mechanical characteristic was analyzed through test. The results show that the supporting performance of concrete filled steel tube support is related to confinement coefficient. Compared with traditional support, the concrete filled steel tube support has high bearing capacity, intensive later strength, good ductility, various standards and well economic benefits, and in conjunction with contractible joint, it is able to implement functions of quantitatively increasing resistance and yielding. Properly designed through optimization analysis on associated effects, the concrete filled steel tube support can meet supporting demand of deep soft rock and joint broken rock.

The urban value is the sum total of the entire human labor which is formed by the accumulating investment as well as the construction activities in the urban city. The urban value is one of the most significant elements in the composition of the real estate value. Urban value determines the value of real estate. Similarity, the value of real estate also has effects on urban value. In accordance with the empirical research, it indicates that the general complexity and dynamics of urban value conform to the using space of Grey Correlative Analysis. To make the analysis of urban value based on Grey Correlative Analysis can explain the differences of the real development trend between each city. According to Grey Correlative Analysis, the main factors that affect urban value are urban economy value, urban position value and urban resources value in turn. Effects on urban value of urban infrastructure and urban scope value are weak. Research for urban value based on the Grey Correlative Analysis provides the more rational and logical decision-making platform to the most acceptable subsystem in the urban economic activities objectively--the activities for the investment and construction of the urban real estate.

A new parallel cascade control program of multiple degrees of freedom is proposed for chemical and industrial cascade processes. Firstly, the two degree of freedom IMC structure is adopted in the secondary control loop, and the set-point tracking and disturbance rejection are decoupled, therefore, the influence on performance of primary loop because of the coupling between the set-point tracking and disturbance rejection in the secondary loop is reduced. Then, based on a modified structure of the Smith predictor control, the primary loop realizes the decoupling control between set-point tracking and disturbance rejection, and simple and effective analytical method is adopted to devise the controllers. Finally, simulations example demonstrates the validity of the proposed control scheme.