Applied Mechanics and Materials Vols. 568-570

Abstract: Improper scheduling model which is selected to execute cloud workflow application usually results in the waste of energy consumption. In order to lower the higher energy consumption of cloud workflow application execution, we propose a novel energy consumption optimization model for cloud workflow scheduling based on service level agreement, which can reduce energy consumption while meeting the performance-based constraints of time and cost. The optimization model can find out the optimal scheduling solution through calculating total energy consumption for each feasible scheduling solution.

Abstract: In order to solve the problems that design documents have large amounts of knowledge but distributed in disorder and that designers can’t express the true retrieval intention, which lead to a lot of useless retrieval results, this paper studied a retrieval algorithm of design knowledge based on domain ontology, and a design knowledge retrieval model based on domain ontology was established. On this basis, considering from word frequency, interval feature and semantic extension, the weight of which were taken into account for establishing retrieved concept set and indexing feature set of design documents; And according to vector space model, an improved similarity algorithm was used to match these set .Ultimately, the design knowledge matching with the retrieval intention was obtained, and the recall and precision of knowledge retrieval was improved greatly, thus achieving the purpose of knowledge reuse.

Abstract: ICT application has greatly improved the efficiency of logistics and reduced unnecessary costs. But it hasn’t been fully used in Chinese logistics. This paper focuses on how to be more effective in using ICT to construct modern logistic to improve logistics informatization. This paper reviews the lack of ICT application in domestic logistics through reviewing literature, such as oversimplified application of ICT in logistics, the undeveloped application of Internet of Things in logistics, slow development of the Logistics Public Information Platform and general phenomenon of information isolated island. This paper also further analyzes the trends on the domestic ICT application in logistics through literature and recent statistics. Based on the analysis, this paper gives practical advices on fully applying ICT to logistics, including achieving the overall integration of IT and CT, accelerating the construction of public platform with intelligent cloud logistics, strengthening industries cooperation and establishing a government-led mechanisms.

Abstract: This study quantified selected emissions (carbon monoxide and nitrogen oxides) that are produced during combustion of beech wood, birch wood and spruce wood charcoal in the combustion tube furnace. The maximum concentration of carbon monoxide and also the nitrogen oxides have been measured in the case of the spruce wood charcoal. The minimum concentration of carbon monoxide and also nitrogen oxides have been measured in the case of the beech wood charcoal. Although the difference between maximum emissions concentration of examined samples has been smooth. The comparison of obtained results with data published by previous studies can be made a suggestion, that the maximum concentrations of measured emissions are higher for wood than for charcoal. The nitrogen oxides yield per weight loss is higher for wood than for charcoal. On the other hand the carbon monoxide yield is higher for charcoal than for wood.

Abstract: Fuzzy comprehensive evaluation is a comprehensive evaluation applying fuzzy transformation theory. It considers the influence of various factors on the design results, does comprehensive quantitative analysis, and uses quantitative index as selection criteria. It took gear tooth number selection in mechanical design as an example, illustrated the application of the fuzzy comprehensive evaluation on parameter selection in mechanical design.

Abstract: Amorphous InAs films are deposited on substrates of quartz glass by RF magnetron sputtering technique in different gas ambient. We present a systematic study of the affects of the sputtering parameters on the chemical composition. Amorphous InAs (a-InAs) films have been achieved at higher working pressure when the substrate temperature and RF power are increased respectively. The films composition is controlled by transport phenomena of sputtered atoms from the target to the substrate and by substrate surface dynamics. We study how to improve the sputtering parameters in order to obtain stoichiometric a-InAs films.

Abstract: In the work, the resistivity of the SiN film was discussed, the resistivity of the SiN film was influenced by the deposition parameters, such as the sputtering power, deposition temperature, N₂ pressure and ratio of N₂/(N₂+Ar). Only considering the resistivity of the SiN film, the optimal parameters of the film were as below, the sputtering power was 50W, the substrate temperature was 400°C, N₂ pressure was 1Pa, and the ratio of N₂/(N₂+Ar) was 2.5%.

Abstract: Shallow arch circular concrete filled steel tube support has a good load-bearing capacity, which is used in soft rock roadway supporting to solve the problem of supporting instability and to reduce the amount of anti-invert excavation. In this paper, concrete filled steel tube supports of Φ168 ×6 are designed according to shallow arch circular concrete filled steel tube structures and their load-displacement curves, ultimate bearing capacity and support failure mode are especially tested in experiment. This shallow arch circular concrete filled steel tube support is also applied in very soft rock roadway supporting of No. 1 mine well of Chaganzhuoer in Xilinhot, Inner Mongolia and proved to be of good supporting effect. The shallow arch circular concrete filled steel tube support is of higher load-bearing capacity and of outstanding advantages in solving extremely soft rock roadway supporting problems, as is proved in both theoretical test and application.

Abstract: Process researching on high resolution and high ratio of depth to width of the negative photoresist (SU-8) process on micro-structure, by means of orthogonal experimental,drawing that the soft baking temperature and soft baking time have the greatest impact on the quality of the lithography. When the thick of photoresist is between 120μm with 340μm, the soft baking temperature is 90°C and the soft baking time is between 50min with 120min, the graphics quality is best. Then, analysis of characteristics of the ratio of high to depth on micro-structure electroforming shows that the mass transfer is the restrictive link of micro electroforming. Which can achieve the process parameters optimization of the lithography and electroforming micro-structure.

Abstract: The embedded composite spinning technology was applied in spinning the composite yarn of polyamide 66 and nomex .The relationship of the polyamide 66 and nomex’s content with the mechanical properties of composite yarn and hairiness was discussed. The method of cluster analysis was applied in analyzing the four kinds of yarn’s mechanical properties. And the results show that when the confidence interval is 95%, the significance of two kinds yarns were greater than 0.05. There is no significant difference between the programs. While the analysis of the hairiness data showed that the fourth solution’s harmful hairiness was much lower that the first solution’s. Therefore, the best solution is the fourth solution.