Key Engineering Materials Vols. 474-476

Abstract: Combined with the composition characteristics of forest fire image background when the forest fire occurred during different time periods of night and day, different image segmentation methods were applied to the forest fire color images of different time periods respectively, which could improve the efficiency of image processing. Meanwhile, application of H and S components from HSV color space, the strategy on color image segmentation which processed the segmentation processing to forest fire color images with complicated background was proposed combined with Otsu algorithm. The results of simulation experiment showed that the above-mentioned segmentation methods were obtained satisfactory segmentation effects when the segmentation on forest fire color images during different time periods of night and day were processed respectively. And also application of Otsu algorithm based on HSV color model, the forest fire image segmentation occurred in the daytime was processed, which overcame the interference factors of light and smoke, as well as the shortage of noise sensibility due to Otsu algorithm.

Abstract: In this paper, through the three-dimensional simulation of the cargo hold in the pre-cooling process–LNGC to reflect the changes of the cooling fluid at the internal space of the hold in pictures, which can directly and properly show the changes. In that case, it is of great practical and theoretical significance for us to master the Pre-cooling law, increase the Pre-cooling rate and the management of LNGC in the future.

Abstract: With the people's attention to food safety issues, And RFID used in the field of the traceability of food safety. Design a system of based on RFID that used to trace the information of food safety. This paper talks about the layers of the system, as well as analyzes every layer’s function, and describes the operating mechanism of this system.

Abstract: This paper is concerned with an iterative functional differential equation with state-dependent delay As well as in previous works, we reduce this problem with the Schroeder transformation to obtain auxiliary equation. For technical reasons, in previous work the constantgiven in the Schroeder transformation, is required to fulfill that is off the unit circle or lies on the circle with the Diophantine condition. In this paper, we discuss not only thoseat a root of the unity, but also those near resonance under the Brjuno condition.

Abstract: Localization is a vital foundation work in Wireless Sensor Network (WSN). Almost all of location algorithms at present need the position information of reference nodes to locate the unknown nodes. But most of algorithms assume an idealistic radio propagation model that is far from the reality. This will lead to obvious difference compared with real localization of WSN. In this paper we investigate the impact of radio irregularity on the localization algorithms performance in WSN. We introduce the Radio Irregularity Model (RIM) which is established upon empirical data. With this model, this paper analyzes the impact of radio irregularity on localization algorithms. We compare three typical coarse-grained localization algorithms: APIT, Centroid and DV-HOP in simulated realistic settings. Our experimental results show that radio irregularity has a significant impact on some main evaluation aspects of localization algorithms. Some interesting phenomena is worthy of further study.

Abstract: The development history and situation of Chinese Discrete Manufacturing Enterprises are reviewed in this paper. Then the problems existed are explained and analyzed from business process prospective. At last, some proper modes based on the process analysis are proposed.

Abstract: A novel high throughput globally asynchronous locally synchronous wrapper is proposed to improve the network interface performance of network on chip. To prevent the occurrence of data sampling error, both the sender and receiver wrapper use the pausable clocking scheme to stop the clock when data come. The VC is based on Muller pipeline and chosen by the VC selector in the circuit. This wrapper can avoid the comparison between read pointer and write pointer in conventional design scheme and can increase the throughput. Simulations were based on SMIC 0.18um CMOS technology, and the sender wrapper and receiver wrapper have the throughput as high as 810Mflit/s and 820Mflit/s respectively.

Abstract: Driving device including mechanical and electrical components has to be protected by special designed shelter to fit the extreme temperature in space environment. A driving device based on stepping motor and gears box and protected by a warm box was developed and tested under simulated space environment. The temperature of the warm box was measured and controlled by electrical heater and paraffin phrase changing. Mathematical models of heat transfer and paraffin phrase changing were established, and temperature distribution of the warm box was simulated by Fluent. Based on the research, a driving device was developed and a control system for temperature in the box and motor motion was also developed. The device was tested under simulated space environment more than 1000 hours, and it was used in EVA space suit experiment successfully.

Abstract: This paper concerns the problem of blown and swayed tree image registration. The swayed tree leaves and little branches contain plenty of details or feature points, but matching with these points may result in error image registration. In this work, we delete some details of leaves and little and thin branches by using of morphological image processing methods, then extract the relatively invariant crotch features of trees from thinning images, lastly we adjusted the matching points with L-M algorithm. Results show our method is insensitive to the ordering, rotation and scale of the input images so it can be used in image stitching and retrieval of images & videos.

Abstract: Titanium dioxide nanoparticles were produced in xylem cell of living tree by in situ hydrolysis of tetrabutyl orthotitanate (TBOT) under ambient pressure and temperature. The specimens were characterized using Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Analysis (EDXA) and X-ray powder Diffraction (XRD) spectroscopy. From these results, spherical and uniform dispersion particles in nanoscale and anatase TiO₂ crystalline phase presence in xylem cell wall of Populus ussuriensis. This work demonstrates that it is possible to generate of wood-nano biological composite material in xylem cell of living tree.