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Search Results: 1 - 10 of 12680 matches for " Minli Yao "
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Linear-Combined-Code-Based Unambiguous Code Discriminator Design for Multipath Mitigation in GNSS Receivers
Jiawei Ren,Huihua Chen,Weimin Jia,Minli Yao
Radioengineering , 2012,
Abstract: Unambiguous tracking and multipath mitigation for Binary Offset Carrier (BOC) signals are two important requirements of modern Global Navigation Satellite Systems (GNSS) receivers. A GNSS discriminator design method based on optimization technique is proposed in this paper to meet these requirements. Firstly, the discriminator structure based on a linear-combined code is given. Then the requirements of ideal discriminator function are converted into the mathematical constraints and the objective function to form a non-linear optimization problem. Finally, the problem is solved and the local code is generated according to the results. The theoretical analysis and simulation results indicate that the proposed method can completely remove the false lock points for BOC signals and provide superior multipath mitigation performance compared with traditional discriminator and high revolution correlator (HRC) technique. Moreover, the proposed discriminator is easy to implement for not increasing the number of correlators.

Yao Minli,Jin Liang,Yin Qinye,

电子与信息学报 , 2000,
Abstract: In this paper, the spectral correlation conjugate cyclic ESPRIT with Minimum-Redundancy Linear-Arrays (MRLA) is presented. The algorithm constructs the pseudodata matrix of MRLA to estimate Direction-Of-Arrival (DOA) through temporal and spatial processing. The equivalent array aperture of the algorithm is 2N -1 with M-sensor MRLA (N>M). Theoretical analysis and computer simulations show that the algorithm is of better performance, such as extending aperture, being insensitive to noise, having higher resolution, and estimating more sources with fewer sensors.

Jin Liang,Yin Qinye,Yao Minli,

电子与信息学报 , 1998,
Abstract: The concept of instantaneous frequency(IF) and its traditional construct method - analytic method are introduced in this paper. Then by means of joint time-frequency analysis, the physical meaning of IF and its relation with the time-frequency distributions are also discussed. It is pointed out that one of the destinations of 2-D time-frequency distributions is to estimate the IF, and the different distribution can be of different effect. The performances of several popular distributions are compared, consequently AOP method is found to be a suitable one to estimate the IF.

Yao Minli,Yan Qinye,Wang Yilin,

电子与信息学报 , 1999,
Abstract: In this paper, conjugate cyclic ESPRIT with minimum-redundancy linear-arrays is presented. Theoretical analysis and computer simulation show that the algorithm has better performance, such as extending aperture, being insensitive to noise, having higher resolution, and estimating more sources with fewer sensors. Computer simulation results and comparisons with conjugate cyclic ESPRIT are presented to demonstrate the performance of the proposed algorithm.
Foreign Present Condition of the Science and Technology Project Evaluation and Development Trend Research
Minli Jin
International Journal of Business and Management , 2009, DOI: 10.5539/ijbm.v3n8p123
Abstract: The science and technology project evaluation is science and technology evaluation of importance constitute part, push national science and technology business to develop continuously and healthily, promote science and technology resources excellent turn to install, suggest a high-tech management important means and guarantee of the level. This text carried on for the abroad in advance national way of doing with evaluation of the science and technology project analytical, put forward evaluating to our country science and technology project according to its evaluation characteristics and the development trend of apocalypse.
A Novel Alignment-Free Method for Comparing Transcription Factor Binding Site Motifs
Minli Xu,Zhengchang Su
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0008797
Abstract: Transcription factor binding site (TFBS) motifs can be accurately represented by position frequency matrices (PFM) or other equivalent forms. We often need to compare TFBS motifs using their PFMs in order to search for similar motifs in a motif database, or cluster motifs according to their binding preference. The majority of current methods for motif comparison involve a similarity metric for column-to-column comparison and a method to find the optimal position alignment between the two compared motifs. In some applications, alignment-free methods might be preferred; however, few such methods with high accuracy have been described.
Computational prediction of cAMP receptor protein (CRP) binding sites in cyanobacterial genomes
Minli Xu, Zhengchang Su
BMC Genomics , 2009, DOI: 10.1186/1471-2164-10-23
Abstract: We have predicted and analyzed the CRP binding sites and regulons in 12 sequenced cyanobacterial genomes using a highly effective cis-regulatory binding site scanning algorithm. Our results show that cyanobacterial CRP binding sites are very similar to those in E. coli; however, the regulons are very different from that of E. coli. Furthermore, CRP regulons in different cyanobacterial species/ecotypes are also highly diversified, ranging from photosynthesis, carbon fixation and nitrogen assimilation, to chemotaxis and signal transduction. In addition, our prediction indicates that crp genes in modern cyanobacteria are likely inherited from a common ancestral gene in their last common ancestor, and have adapted various cellular functions in different environments, while some cyanobacteria lost their crp genes as well as CRP binding sites during the course of evolution.The CRP regulons in cyanobacteria are highly diversified, probably as a result of divergent evolution to adapt to various ecological niches. Cyanobacterial CRPs may function as lineage-specific regulators participating in various cellular processes, and are important in some lineages. However, they are dispensable in some other lineages. The loss of CRPs in these species leads to the rapid loss of their binding sites in the genomes.Cyclic AMP receptor protein (CRP), also known as catabolite gene activator protein (CAP), is an important transcriptional regulator widely distributed in a variety of bacterial groups [1,2]. The biological processes under the regulation of CRP are highly diverse, including energy metabolism [3,4], cell division and development [5], toxin production [1], competence development [6], quorum sensing [7] and cellular motility [8,9]. CRP belongs to the CRP/FNR transcription factor (TF) superfamily [10], which are generally believed to function as global regulators throughout the eubacteria [11]. Each member of the CRP/FNR superfamily contains an N-terminal effector binding domain a
Performance Evaluation of Marine Industries Based on Eco-economy
Minli Gong,Yanqing Qi
International Journal of Online Engineering (iJOE) , 2013, DOI: 10.3991/ijoe.v9is2.2603
Abstract: An assessment framework is made to evaluate the performance factors of marine industries from the perspective of eco-economics by means of the AHP and the Delphi methods. Results are as follows: Performance assessment index of marine industries is decided by ecological performance, economic performance and social performance with ecological index taking priority over economic index; the efficiency of economy output and value-creating are preferred in the pursuit of low energy-consuming and less polluting marine industries; and in the near future, marine industries will make the greatest contribution to employment.
Design and development of highway tunnel maintenanceand management system
Ge Minli, Sun Lu
- , 2015, DOI: 10.3969/j.issn.1003-7985.2015.01.023
Abstract: In order to solve the urgent problem of how to manage and sustain highway tunnels with advanced information technology with the background of the rapid development in the modern traffic, and achieve the cost-effectiveness optimal principle objectives under the premise of guaranteeing a smooth flow of traffic; a highway tunnel maintenance and management system framework and the key modules were proposed. First, the determined highway tunnel condition assessment index system was established according to the result of expert consulting forms. Secondly, the tunnel diseases, the corresponding maintenance measurements, and many-to-many relationship between diseases and maintenance measurements were introduced. Then, three kinds of 0-1 integer programming models were built according to different tunnel operators’ needs in the optimization decision module. Finally, the further development and implementation of the system was prospected. The research results can provide references to tunnel researchers and managers.
Computational analysis of LexA regulons in Cyanobacteria
Shan Li, Minli Xu, Zhengchang Su
BMC Genomics , 2010, DOI: 10.1186/1471-2164-11-527
Abstract: Our analysis indicates that six of 33 sequenced cyanobacterial genomes do not harbor a lexA gene although they all encode the key SOS response genes, suggesting that LexA is not an indispensable transcription factor in these cyanobacteria, and that their SOS responses might be regulated by different mechanisms. Our phylogenetic analysis suggests that lexA was lost during the course of evolution in these six cyanobacterial genomes. For the 26 cyanobacterial genomes that encode a lexA gene, we have predicted their LexA-binding sites and regulons using an efficient binding site/regulon prediction algorithm that we developed previously. Our results show that LexA in most of these 26 genomes might still function as the transcriptional regulator of the SOS response genes as seen in E. coli and other organisms. Interestingly, putative LexA-binding sites were also found in some genomes for some key genes involved in a variety of other biological processes including photosynthesis, drug resistance, etc., suggesting that there is crosstalk between the SOS response and these biological processes. In particular, LexA in both Synechocystis sp. PCC6803 and Gloeobacter violaceus PCC7421 has largely diverged from those in other cyanobacteria in the sequence level. It is likely that LexA is no longer a regulator of the SOS response in Synechocystis sp. PCC6803.In most cyanobacterial genomes that we analyzed, LexA appears to function as the transcriptional regulator of the key SOS response genes. There are possible couplings between the SOS response and other biological processes. In some cyanobacteria, LexA has adapted distinct functions, and might no longer be a regulator of the SOS response system. In some other cyanobacteria, lexA appears to have been lost during the course of evolution. The loss of lexA in these genomes might lead to the degradation of its binding sites.The LexA protein was first characterized as the transcriptional regulator of the SOS response in Escherichia c
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