Advanced Materials Research Vol. 459

Abstract: In cell phone injection mould design process, abundant knowledge is reused. To improve product design efficiency, a NX-based cell phone injection mould was proposed in this paper. The key techniques such as product initialization, setting mould coordinate system, defining blank of mould core, and layout of multi-cavity mould are described in detail. As choosing suitable parting surface is very important for injection mould design, the paper explained the choosing method and process of parting surface very clearly, which effectively cut short the period of product design

Abstract: The traditional manual fault interpretation is time consuming. A powerful method for rapidly obtaining detailed fault and fracture interpretation from seismic amplitude data was proposed. It can remarkably save time during the fault interpretation task. Moreover, it can easily detect some minor faults that can not be traced manually. This method has been applied to one of Chinese oil reservoirs. The resulting interpretation, in conjunction with fracture information derived from well log measurements are illustrated.

Abstract: One kind of scanning distance-imaging system based on time-of-flight measurement is reported in this paper. With Nd:YAG Laser for light source, oscillating mirror for light beam scanning, SR620 for fly time measuring, the target tridimensional image is traced out through the software. This prototype has great distance-resolution as 15cm, angle-resolution as 1mrad ×1mrad, scan scale as 10×10°, and the detective range as 1km. The mathematical model of sampling, data mapping and coordinate transform are discussed, which used for system design. And the final range images are also given as follow

Abstract: In steganalysis, it is important to ascertain the stego algorithm. In this paper, a blind steganalysis scheme based on evidence reasoning, which is capable of assinging stego images to known steganagraphic programs, is put forward. The evidences are extracted from the dct domain, pixel domain and dwt domain. The BPA function is obtained by transforming the svm based a posterior class probability. Three different scheme are tested and compared. Experimental results reveal the fact that our scheme is more effective than others and applying the evidence reasoning into steganalysis can integrate the advantages of different features, and improve the detection rate accordingly

Abstract: Freshwater is in shortage in many parts of our country. Study on sustainable use of water resources is an inportant topic.Based on analyzing the status of destroy and pollution of water resources in Nantun coal mining area, Countermeasures of water resources protection and pollution prevention in Nantun coal mining area are put forward.These are beneficial to sustainable use of water resources in Nantun coal mining area and regional sustainable development.

Abstract: High speed of optical backbone transmission network makes descrambling at receivers a challenge. Considering the limit process frequency of general hardware device, parallel structure is used in descrambling. The general parallel descrambling structure (GPDS) uses too many multi-level xor operations which are complex and may cause delay to affect the hardware performance. To reduce system complexity, we have designed a memory-based parallel descrambling structure (MPDS). MPDS usually covers a large amount of memory. To overcome the shortcomings of GPDS and MPDS, a novel resource-optimized parallel descrambling structure (ROPDS) is proposed. Evaluation results show that ROPDS reduces the complexity of parallel descrambling, improves the hardware performance, and makes the most effective use of the logic and memory resource.

Abstract: Based on the DEFD-SIFT feature analysis, this paper presents a novel algorithm for hand vein feature extraction and recognition. First of all, the principle of the near-infrared hand vein image acquisition is introduced. Secondly, the SIFT feature analysis algorithm is used to extract the feature of hand vein. We designed a novel neighborhood descriptor, which is called “Double Ellipses Feature Descriptor”. The local texture feature is extracted effectively, while reducing the interference of skin region. Finally, the SIFT feature matching algorithm based on similarity measure is given and the experimental results demonstrate the high efficiency of the proposed algorithm in runtime and correct recognition rate.

Abstract: In this study, a new system performance evaluation method is introduced to the two-machine line. After that, the extended system aggregation model is developed and corresponding aggregation formulations are deduced.Different from traditional production models, the production line features unreliable buffers and multiple stochastic failure modes of the machines. The method is applicable to analyzing the cases arising from two or more stochastic events or more complex production lines

Abstract: This paper introduces a kind of alcohol test system composed of hardware based on alcohol instrument, and software based on data management, which is the foundation of internet wireless technology transmission platform based on embedded web server. It can provide reliable wireless sensor networks and complete information integration and conformity through sites control platform, present wireless data transmission technology and data management system in order to achieve unified management of information and law enforcement. Practice shows the alcohol test system has obvious advantages with stability, high accuracy, and strong anti-interference.

Abstract: Enterprise Cluster is an effective way for the development of SMEs. Because the economic conditions and constraints are different in different countries and regions, the developing modes of SMEs’ cluster are also different. Only by identifying the constraints that affect the cluster development of the SMEs in Jilin Province can we select the appropriate developing mode of the SMEs’ cluster in Jilin province. This article made deep analysis on the constraints that affect the cluster development of SMEs in Jilin Province from multiple aspects. At last it put forward some countermeasures and suggestions for the cluster development of the SMEs in Jilin Province