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This article researched and analyzed the status and problems of innovative ideas, innovative practices and innovation ability development platform construction for engineering postgraduate degree in local colleges, based on practice and experience in mechanical engineering postgraduate training process, and put forward a number of recommendations for innovation platform construction in local university mechanical engineering graduate degree

Remote sensing satellite images can intuitively reflect the information of the Earth's surface. The computer image processing system is of the advantages of high-precision and low-cost. It has a strong application value to study the computer processing system of remote sensing satellite image. The paper first discussed the design principles of the computer processing system and the implementation of its workflow, and then the application of the image processing system is briefly analyzed.

Geographic Information System Technology, Global Positioning System Technology, Remote Sensing Technology, collectively known as 3S technology. In the information age, the technology is one of the important technologies for human changes in the Earth's sustainable development research. As the center of the content of the Earth Information Science, along with the surging trend of information technology, it has been a wide range of applications. Through the practical application of 3S technology, this paper maps on the glacier on the Qinghai-Tibet Plateau for a simple exposition.

The development of science and technology promotes the development of industrial and the change of idea and thoughts. Combined with the computer technology and information technology development, a lot of scientific technologies achieved huge improvement. In this context, simulation technology has also made a comprehensive and in-depth development, especially in the design and application of the all-digital flight simulation platform. The building of all-digital flight simulation platform has greatly helped pilots' flying in the complex environment, which has important significance to reducing the flight costs, enhancing the pilot combat techniques, etc. In particular, the development and utilization of the UAV will greatly promote the combat capability of the Air Force, and has great significance to enhance the country's military level.

This paper proposed a method to extract the machine defect from the surface images of high-speed milling workpiece and reduced the impact of workpiece surface background texture. Firstly, Wiener filtering method is used to denoise the high-speed milling workpiece surface images. Then, the potential texture images are obtained by using the non-negative matrix decomposition algorithm for learning denoising images unsupervisedly. Next, original images and potential texture images are used to convolute with the imaginary part function of Gabor filter respectively and apply image differencing method to obtain the energy difference images. The binary defect images are extracted after the threshold segmentation method is applied. Application example shows the capability of this method to extract machine defect.

In this study, random amplified polymorphic DNA (RAPD) analysis was used to estimate genetic diversity and relationship in 134 samples belonging to two native cattle breeds from the Yunnan province of China (DeHong cattle and DiQing cattle) and four introduced beef cattle breeds (Brahman, Simmental, MurryGrey, and ShortHorn). Ten primers were used, and a total of 84 bands were scored, of which 63 bands (75.0%) were polymorphic. The genetic distance matrix was obtained by proportions of shared fragment. The results indicate that the Yunnnan DeHong cattle breed is closely related to the Brahman (Bos indicus), and the Yunnan DiQing cattle breed is closely related to the Simmental, ShortHorn, and MurryGrey (Bos taurus) breeds. Our results imply that Bos indicus and Bos taurus were the two main origins of Yunnan native cattle. The results also provide the basic genetic materials for conservation of cattle resources and crossbreeding of beef cattle breeds in South China.

The mitochondrial DNAs (mtDNAs) from 30 pigbreeds (29 Chinese native breeds and 1 European breed)and wild boars were investigated for restrictionfragment length polymorphisms (RFLPs) to determine thephylogenetic relationships and geneticdiversity among pig breeds and wild boars. Of the 24enzymes used, 8 (AvaI, BclI, BglII, EcoRI, EcoRV, ScaI,StuI, and XbaI) detected polymorphisms. By combining thecleavage patterns for each enzyme, 108individuals were sorted into eight mtDNA mitotypes.There are two haplotype lineages in domestic pigs, i.e.,Chinese and European lineages. The pairwise nucleotidesequence divergence was calculated to be 0.56%between Chinese pigs and European pigs, suggesting thatthey might have diverged from a common ancestorapproximately 280,000 years ago. The wild boars showedmore extensive genetic variation, fourmitotypes were detected in six wild boars. In addition,one of the Zhejiang wild boars was found to share thesame mitotype with Chinese native pigs. A UPGMA treebased on genetic distance among mitotypesindicated that mtDNAs of Chinese pigs and European pigsare clearly divided into two clusters, and Chinese wildboars are more closely related to the Chinese pigs.Our results provide molecular evidence tosupport the previous hypothesis that pigs may be derivedfrom two maternal origins, Asian and European wildboars. Chinese native pig breeds may have a singleorigin.

To investigate the origin and genetic diversity of domestic pigs, the porcine TYR exon 1 in 36 individuals from 12 Chinese indigenous breeds, three European breeds, eight Chinese wild boars and two Vietnamese wild boars was sequenced. Sequence analysis revealed six synonymous mutations, and all the sequences could be sorted into 4 haplotypes. Combining with the published sequences, we constructed a reduced median network (RM network), in which TYR*2 was a haplotype dominated by European domestic pigs and wild boars, plus only three chromosomes from Asian pigs. Most Asian domestic pigs and wild boars shared haplotype TYR*1, demonstrating that TYR*1 was an Asian specific haplotype. Meanwhile, some European domestic pigs and wild boars carried the haplotype TYR*1. TYR*3 and TYR*4 were two haplotypes with low frequencies, containing mainly Chinese indigenous pigs and Asian wild boars, plus some European domestic pigs. Independent domestication of pigs from Asia and Europe was supported by the pattern of RM network. The European commercial breeds had been suffered from introgression from Chinese pigs, and a few Chinese indigenous breeds and Japanese wild boars were also suffered from introgression from European pigs as well.

The 1 042 bp control region of mitochondrial DNA from 84 geese of 15 domestic goose breeds was sequenced and genetic differentiation was analysed. Results showed that the interpopulation nucleotide divergence was highest (3.805% -4.067%) between Yili and the other 14 breeds. The average nucleotide diversity variation within different domestic breeds was 0 - 0.116%. Excluding the Yili, the interpopulation nucleotide divergence between Huoyan and the remaining breeds, was 0.211% - 0.272%, which was significantly higher than that between any other two breeds (0 -0.094%). During the formation of domestic breeds in China,there is an association between the genetic differentiation of domestic geese and their geographic distribution. The divergence time of Huoyan breed was relatively earlier and genetic drift may have been the main factor to affect the genetic differentiation of the Huoyan breed (Nm = 0.02 -0.54). On the other hand, gene flow is the main reason for the lack of a clear differentiation among the remaining 13 Chinese domestic geese breeds (Nm = 12.0 - 65.33).

To investigate the genetic diversity and genetic data of Baoshan pig in Yunnan province,the mitochondrial DNA D-loop hypervariable segment I sequences 15 363 approximately 15 801 (438 bp) in 19 individuals of Baoshan pig were sequenced. Ten mitochondrial haplotypes were identified in the samples, with 8 sites showing polymorphism, which were 5 T/C and 1 G/A transitions, 1 G/C and 1 A/T transversions. The contents of A,T,G and C were 35.4%,26 9%,13.2% and 24.5%,respectively. The content of A+T (62.3%) was significantly higher than that of G+C (37.3%). It will be of importance to conservation and sustainable utilization in Baoshan pig.