Advanced Materials Research Vols. 588-589

Abstract: Payment cards supporting contactless transactions are becoming increasingly popular in recent years. While enjoying the benefits in terms of speed and convenience provided by the new feature, considerable concerns over security and privacy of RFID technology used for contactless payment have been raised for some time. Actually, diverse attacks against fielded systems have already been found and demonstrated. Among the various existing countermeasures, cryptographic solutions are more commonly used as a mechanism for providing security and privacy protections. The goal of this paper is to take a deep insight into one of the RFID-enabled payment devices, known as Digital Signature Transponder (DST). Especially, the explanation of its cryptographic design is presented in detail.

Abstract: A novel photonic crystal fibers (PCFs) based polarization splitter is proposed in this paper. It is designed by highly birefringent dual-core PCFs which hollow ring defects are used in its one direction to break the structural symmetry. Compared to the previous methods achieving high birefringence, this new type of PCFs can partly overcome the design and fabrication limitations for the PCF-based polarization splitter. Its transmission properties, coupling lengths for the two orthogonal polarizations and the performance of the proposed polarization splitter are investigated respectively. The results show that a 0.676-mm-long polarization splitter can be obtained. When the splitting ratio is better than -15dB, its bandwidth is about 45.8nm.

Abstract: In the building structure, the quality and stiffness of the outthrust compared are very small compared with the main structure. When k₁>> k₂, M₁ >> M₂, and the value of K₁ / k₂ is approximate the value of M₁ / M₂, it is prone to whiplash effect. This paper analyzed whiplash effect phenomenon because of various vibration, proposed the measures which should be taken to avoid the whiplash effect.

Abstract: Cd in soil samples at 12 sites from Dabizhuang, Tianjin, was analyzed with the sequential extraction. According to its area types, the Ssites are divided into 5 groups. The test of Cd in soil was carried out by using atomic absorption spectrometry. The analyzed results showed that the area around the factory was seriously polluted, and sewage irrigation was moderately polluted. Cd is mainly existed as Carbonate and ionic form in soil which are the non-stable species.

Abstract: By means of pattern space division and based on Map/Reduce, the problem of processing the many-to-many corresponding relationship between the data set and the patterns set is converted to the problem of processing the many-to-many corresponding relationship between the data subsets and the pattern subspaces associated with the frequent 1-itemsets. Thus, the scale of the intermediate key/value pairs set is reduced so dramatically that the problem of single Map node bottleneck which results from combinatorial explosion of candidate patterns space is avoided. Over three rounds of Map/Reduce tasks, the pattern space is constructed and divided, the filtering rules is established and employed, father more, the mining of frequent patterns is realized in each pattern subspace independently. By making the best of both the universal trait of the entire pattern space and the individuality of each pattern subspace, the optimized non-recursive algorithm is designed and implemented to improve the efficiency of mining phase.

Abstract: On the basis of research in foreign countries on the relationship among technological progress, rebound effect and energy efficiency, the paper mainly from the following two aspects to study relationship among technological progress, rebound effect and energy efficiency in China. First of all, it studies mechanism of rebound effect on the basis of technological progress. It is mainly from the direct rebound effect, indirect rebound effect and economy-wide rebound effect of energy efficiency for the analysis of the mechanism of action. Secondly, it studies both theoretical research and empirical analysis on rebound effect based on technological progress relationship with energy efficiency. Based on the actual situation in China, it researches "Jevons paradox" led to the relationship between rebound effect and energy efficiency both theory analysis and empirical test. Through the above study, we expect to offer useful references for China’s research on the relationship among technological progress, rebound effect and energy efficiency.

Abstract: After while the “Human Genome Project” proposes, the people complete measures the foreword plan after the multi-gene genome team, also starts to change to these genes and their reciprocity function understanding research. Varieties of gene regulation Boolean networks algorithms have been proposed of the gene expression profiles, however, the problem of noise could always be found in creating a Boolean network. Due to gene expression data are always noisy. In this paper, it show that after the Boolean networks logic function are learned from noisy data, some noise in the Boolean function could be restructure Karnaugh Maps. It could find logic relationships between protein and protein and restructure protein logic networks. It find logic relationship among proteins as well as COGs (clusters of orthogous groups) and build the logic network of protein.

Abstract: In three-dimensional space, by using the method of a priori estimation, we have studied the complex-valued GL equation, which has the 2 -th power of the nonlinear term. We have proved that the existence of the global attractor of this equation with the problem of period and border value, and we have studied the dimensionality of Hausdorff and fractal of the global attractor.

Abstract: A hybrid treatment system combining enforced diatomite process followed by biological aerated filters (BAF) was developed for treatment of municipal wastewater. Most pollutants, especially phosphorus, were removed in the enforced diatomite process and BAFs took a role of polishing process. New ceramic filter media and ceramisite agitator were used in two BAFs for comparison. The results showed that when the average influent CODcr was 347mg/L, NH4+-N 49mg/L and TP 6.1mg/L, the removal efficiency was 92.6%, 99.8%, and 96.4% respectively at the operating conditions of precise diatomite dosage of 75mg/L, the sludge reflux ratio 100%, the HRT of 30min in diatomite enhanced primary treatment process and the HRT of 1.5h in BAF.

Abstract: In order to determine the residues and the distribution characteristics of organochlorine pesticides (OCPs) in arable land from Liaocheng City, 136 soil samples were collected using lattice method. The samples were extracted by accelerated solvent extraction (ASE), the residual amounts of 8 types of OCPs, including α-BHC, β-BHC, γ-BHC, δ-BHC, p,p′-DDE, p,p′-DDT, p,p′-DDD and o,p′-DDT, were analyzed with GC-ECD. With the aid of software of SPSS and ArcGIS, residues and spatial distributions of 8 OCPs were analyzed. The results showed that all OCPs had different detectable rates and residual amounts. p,p′-DDE was the primary pollutant in arable land of Liaocheng. Its detectable rate and average residual amount were both highest, 92.65% and 74.16µg•kg-1 respectively, over the first grade criteria (50µg•kg-1) of the national standard for soil environment quality, while the residual amounts of the other OCPs were at a low level and didn't pollute the arable land. The results of spatial distribution showed that the 8 OCPs varied greatly. β-BHC distributed widely, and the others were relatively concentrated. There was a significant difference of γ-BHC and DDTs between Linqing county and the other counties, and the residual amounts in Linqing were highest, and there was no obvious difference among the other counties