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Improvement of DV-Hop Localization Based on Artificial Bee Colony Algorithm
基于人工蜂群算法的DV-Hop定位改进

LI Mu-dong,XIONG Wei,GUO Long,
李牧东
,熊 伟,郭 龙

计算机科学 , 2013,
Abstract: With regard to the problem that the typical rangcfrec localization algorithm of DV-Hop for wireless sensor networks has low localization accuracy, the artificial bee colony algorithm with good robust, high convergence speed and outstanding performance on solving global optimization problems was applied to the design of DV-Hop algorithm and an improved algorithm named as ABDV-Hop(Artificial Bee Colony DV-Hop) was proposed. Based on the original DV-Hop algorithm, the improved algorithm uses the information of distance between the nodes as well as the location of beacon nodes.Through establishing the optimization function, the location of unknown nodes is estimated at the final stage of the algorithm. The results show that the proposed method can significantly reduce positioning error compared with the original DV-Hop algorithm without increasing the hardware overhead of sensor nodes.
Biological and chemical diversity of cytotoxin-producing symbiotic marine fungi in intertidal zone of Dalian
Yi Zhang,Jun Mu,Yan Feng,HeNan Li,XueWei Dong
Chinese Science Bulletin , 2013, DOI: 10.1007/s11434-012-5442-2
Abstract: In this study, the biological and chemical diversity of 8 symbiotic marine fungal strains, with strong cytotoxicity against brine shrimp larvae, were investigated by nucleotide sequencing, morphology and cluster analysis of HPTLC fingerprint. These strains were identified by ITS rDNA sequencing, phylogenic analysis, and morphology to be Hypocrea lixii, Chaetomium globosum, Aspergillus fumigatus, Asp. clavatus and Alternaria sp. Their differences in secondary metabolites were shown by cluster analysis of digitalized colors of HPTLC spots, a newly developed method, which produced a similar dendrogram with that of ITS cluster analysis. Furthermore, this method can fully display intraspecific differences and even the remarkable difference in Aspergillus strains which goes beyond the boundary between genera. Their biological-chemical diversity may be the basis of their potent cytotoxicity and implies their potential in producing diversified antitumor or pesticidal constituents.
Application of DEA in Investment Effects Evaluation of Non coal Industry
DEA 在非煤产业投资效果评价中的应用

Mu Dong,Li Guan,
穆 东
,李 冠

系统工程理论与实践 , 1998,
Abstract: Whether or not success of an investment project depends to a large extent on running process after investment. In this paper, using a method of date envelopment analysis(DEA) we evaluate the running process of the investment projects of non coal industries in mining enterprises group, and provide theory basis for following management of the projects.
Software Defect Prediction Using Non-Negative Matrix Factorization
Rui hua Chang,Xiao dong Mu,Li Zhang
Journal of Software , 2011, DOI: 10.4304/jsw.6.11.2114-2120
Abstract: Quality is considered as an important issue in the fields of software engineering. However, building quality software is very expensive, in order to raise the effectiveness and efficiency of quality assurance and testing, software defect prediction is used to identify defect-prone modules in an upcoming version of a software system and help to allow the effort on those modules. Although many models have been proposed, this problem has not resolved thoroughly. For overcoming these limits, recent results show that researcher should pay more attention to improve the quality of the data. Aimed at this purpose, in this paper, we propose a novel approach to resolve the problem of software defect prediction. The method is classification using Non-Negative Matrix Factorization (NMF). In this paper, NMF algorithm is not only used for extracting external features but also as a powerful way for classification of software defect data. Experiments demonstrating the efficiency of the proposed approach are performed for software defect data classification. And the results show that it outperforms the state of the art techniques tested for this experiment. Finally, we suggest that it can be a useful and practical way addition to the framework of software quality prediction.
Structure-function relationship of antimicrobial peptide cathelicidin Pc-CATH1
Li Dong,Juan-Juan Yang,Ying Wang,Huan Liu,Li-Xian Mu,Dong-Hai Lin,Ren Lai
Natural Products and Bioprospecting , 2012, DOI: 10.1007/s13659-012-0016-1
Abstract: Cathelicidin Pc-CATH1 is a cathelicidin-derived myeloid antimicrobial peptide identified from Phasianus colchicus with strong antimicrobial activity against most of bacteria and fungi tested, including the clinically isolated (IS) drug-resistant strains. Considering the uniform distribution of net positive charge in both C- and N-terminus sequence of cathelicidin Pc-CATH1 and most of hydrophobic amino acid (aa) residues positioned in middle of the sequence, the antimicrobial peptide was used to investigate the structure-function relationship by truncating gradually N- or C-terminus amino acid residue. More than 10 modified peptide homologues (20–26 aa length) of cathelicidin Pc-CATH1 were found to keep strong antimicrobial abilities. The possible relationships between bioactivities including antimicrobial and hemolytic abilities, components of secondary structure, hydrophobicity, amphipathicity, net charge, and sequence length were investigated. The current work provided suggestions for structural and functional modification of linear, α-helical antimicrobial peptides containing no disulfided bridges.
High Postoperative Serum Cortisol Level Is Associated with Increased Risk of Cognitive Dysfunction Early after Coronary Artery Bypass Graft Surgery: A Prospective Cohort Study
Dong-Liang Mu, Li-Huan Li, Dong-Xin Wang, Nan Li, Guo-Jin Shan, Jun Li, Qin-Jun Yu, Chun-Xia Shi
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0077637
Abstract: Context Stress response induced by surgery is proposed to play an important role in the pathogenesis of postoperative cognitive dysfunction. Objective To investigate the association between postoperative serum cortisol level and occurrence of cognitive dysfunction early after coronary artery bypass graft surgery. Design Prospective cohort study. Setting Two teaching hospitals. Patients One hundred and sixth-six adult patients who were referred to elective coronary artery bypass graft surgery from March 2008 to December 2009. Intervention None. Main Outcome Measures Neuropsychological tests were completed one day before and seven days after surgery. Cognitive dysfunction was defined using the same definition as used in the ISPOCD1-study. Blood samples were obtained in the first postoperative morning for measurement of serum cortisol concentration. Multivariate Logistic regression analyses were performed to assess the relationship between serum cortisol level and occurrence of postoperative cognitive dysfunction. Results Cognitive dysfunction occurred in 39.8% (66 of 166) of patients seven days after surgery. Multivariate Logistic regression analysis showed that high serum cortisol level was significantly associated with the occurrence of postoperative cognitive dysfunction (odds ratio [OR] 2.603, 95% confidence interval [CI] 1.371-4.944, P = 0.003). Other independent predictors of early postoperative cognitive dysfunction included high preoperative New York Heart Association functional class (OR 0.402, 95% CI 0.207-0.782, P = 0.007), poor preoperative Grooved Pegboard test score of nondominant hand (OR 1.022, 95% CI 1.003-1.040, P = 0.020), use of penehyclidine as premedication (OR 2.565, 95% CI 1.109-5.933, P = 0.028), and occurrence of complications within seven days after surgery (OR 2.677, 95% CI 1.201-5.963, P = 0.016). Conclusions High serum cortisol level in the first postoperative morning was associated with increased risk of cognitive dysfunction seven days after coronary artery bypass graft surgery.
Analysis on the ionization of high power pulsed unbalanced magnetron sputtering powered by direct current
直流电源耦合高功率脉冲非平衡磁控溅射电离特性

Mu Zong-Xin,Mu Xiao-Dong,Wang Chun,Jia Li,Dong Chuang,
牟宗信
,牟晓东,王春,贾莉,董闯

物理学报 , 2011,
Abstract: High Power impulse Unbalanced Magnetron Sputtering has been coupled to a direct current source (dc-HPPUMS or dc-HiPUMS). A coaxial coil and an attached hollow cathode were applied to control discharge properties and improve pulsed power density. A large extent breakdown was induced for avalanche discharge mechanism. The magnetic trap on sputtering target traps the secondary electrons excited by the avalanche and forms a drift current in magnetic trap. The peak pulse current density is higher than 100 A/cm2 with a pulse frequency less than 40 Hz. The space charge limited condition controls the discharge for plasma far away from equilibrium. The discharge theory was taken to describe the high ionization mechanism in dc-HPPUMS discharge. The parameters deduced from Child law agree with the experimental results.
Electrostatic oscillation and coupling resonance in double trap of unbalanced magnetron sputtering
非平衡磁控溅射双势阱静电波动及其共振耦合

Mu Zong-Xin,Mu Xiao-Dong,Jia Li,Wang Chun,Dong Chuang,
牟宗信
,牟晓东,贾莉,王春,董闯

物理学报 , 2010,
Abstract: 非平衡磁控靶表面电场和磁场相互正交构成磁阱结构,磁控靶和与之平行的偏压基片之间形成了另一种势阱结构,等离子体静电波动在这两种势阱结构中形成耦合共振.采用Langmuir探针研究等离子体中参数和浮置电位信号的功率谱密度.典型放电条件下两种势阱结构中的本征频率分别约为30—50 kHz和10—20 kHz,两种势阱条件下根据声驻波共振模式计算的电子温度数值与实验结果相符合.
Effects of Dietary Chitosan on Hormone Level in Dairy Calves
Maohong Sun,Chunwang Yue,Jian Ge,Xiuming Mu,Dong Li,Qiang Hao
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2012.727.730
Abstract: The objective of the present study was to evaluate the effects of chitosan on serum GH, T3 and T4 in and to determine the appropriate supplemental dosage level of chitosan in dairy calves diet. A 30 days trial of dietary chitosan supplementation was reported. Twenty dairy calves were allotted at random to four groups at 10 days of age. Calves in the control group were fed the basal diet alone and calves in treatment groups I-III were fed the basal diet supplemented with 200, 400, 600 mg/day/h Chitosan (CTS), respectively for 30 days. The trial demonstrated that dietary chitosan supplementation significantly increased serum T3 level (p<0.05), when comparing chitosan groups I, II with the control group. Dietary supplementation of chitosan at 400 mg/day/h significantly increased serum T3 (p<0.05). Treatments with various levels of chitosan supplementation showed a tendency of increase in serum T4 and GH levels. So, the appropriate supplemental dosage of chitosan in the diets of dairy calves was 400 mg/day/h Chitosan (CTS).
Business Selling Process Reengineeing and Application
企业销售流程再造及应用

MU Dong,SONG Li-yan,
穆东
,宋立燕

系统工程理论与实践 , 2002,
Abstract: On the basis of analysis of business environment, with business process reengineering, this paper proposes a view of business selling process reengineering (BSPR) and presents the method and the process of BSPR in detail on the basis of analysis of Taiwei Food Limited Company. Finaly, the paper analyses and assesses the effect of BSPR.
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