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Fast Sparse Multipath Channel Estimation with Smooth L0 Algorithm for Broadband Wireless Communication Systems  [PDF]
Guan Gui, Qun Wan, Ni Na Wang, Cong Yu Huang
Communications and Network (CN) , 2011, DOI: 10.4236/cn.2011.31001
Abstract: Broadband wireless channels are often time dispersive and become strongly frequency selective in delay spread domain. Commonly, these channels are composed of a few dominant coefficients and a large part of coefficients are approximately zero or under noise floor. To exploit sparsity of multi-path channels (MPCs), there are various methods have been proposed. They are, namely, greedy algorithms, iterative algorithms, and convex program. The former two algorithms are easy to be implemented but not stable; on the other hand, the last method is stable but difficult to be implemented as practical channel estimation problems be-cause of computational complexity. In this paper, we introduce a novel channel estimation strategy using smooth L0 (SL0) algorithm which combines stable and low complexity. Computer simulations confirm the effectiveness of the introduced algorithm. We also give various simulations to verify the sensing training signal method.
The development of soy sauce from organic soy bean  [PDF]
Shoupeng Wan, Yanxiang Wu, Cong Wang, Chunling Wang, Lihua Hou
Agricultural Sciences (AS) , 2013, DOI: 10.4236/as.2013.45B022
Abstract:

Soy sauce by a high salt liquid-state fermentation process was prepared using the organic soy beans as raw material. Beidahuang organic soy bean was selected among different raw materials. Here, the best technique was determined. Firstly, the organic soy beans were soaked for 7 hours under 121℃, steamed for 15 min and mixed with the fried wheat (5:5, w/w). After inoculated with Aspergillus oryzae 3.042 (0.3%, w/w) and cultured for 36 hours, the koji was obtained. When the brine (2:1, w/w) was added, fermentation started. At the end of the fermentation, isoflavone content of organic soy sauce was 0.22 mg· g-1 higher than those in the non- organic soy beans. In addition, compared to the control there were a higher unsaturated fatty acids content, the linoleic acid content in crude fat of 51.61% and γ-linolenic acid content in crude fat of 0.55%.

Acroframosome-Dependent KIFC1 Facilitates Acrosome Formation during Spermatogenesis in the Caridean Shrimp Exopalaemon modestus
Cong-Cong Hou, Wan-Xi Yang
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0076065
Abstract: Background Acrosome formation and nuclear shaping are the main events in spermatogenesis. During spermiogenesis in Exopalaemon modestus, a unique microtubular structure called the acroframosome (AFS) forms in spermatids. The AFS links to a temporary organelle called the lamellar complex (LCx) leading to the formation of an everted umbrella-shaped acrosome and a dish-shaped nucleus in the mature sperm. These morphological changes require complex cell motility in which the C-terminal kinesin motor protein called KIFC1 is involved. In this study, we demonstrate that KIFC1 moves along the AFS and plays an important role in acrosome formation and nuclear shaping during spermatogenesis in E. modestus. Methodology/Principal Findings We cloned a 3125 bp complete cDNA of kifc1 from the testis of E. modestus by PCR. The predicted secondary and tertiary structures of E. modestus KIFC1 contain three domains: a) the C-terminus, b) the stalk region, and the c) N-terminusl. Semi-quantitative RT-PCR detected the expression of kifc1 mRNA in different tissues of E. modestus. In situ hybridization demonstrated the temporal and spatial expression profile of kifc1 during spermiogenesis. Western blot identified the expression of KIFC1 in different tissues of E. modestus, including the testis. Immunofluorescence localized KIFC1, tubulin, GM130, and mitochondria in order to elucidate their role during spermiogenesis in E. modestus. Conclusion/Significance Our results indicate that KIFC1 transports the Golgi complex, mitochondria, and other cellular components that results in acrosome formation and nuclear shaping in E. modestus. The KIFC1 transport function depends upon the microtubular structure called the acroframosome (AFS). This study describes some of the molecular mechanisms involved in the acrosome formation and nuclear shaping in E. modestus. In addition, this study may provide a model for studying the molecular mechanisms involved in spermatogenesis in other crustacean species and lead to a better understanding of the fertilization process in crustaceans.
Multivariate coupling mechanism of NOCTUIDAE moth wings’ surface superhydrophobicity
XiaoJun Wang,Qian Cong,JianJun Zhang,YanLing Wan
Chinese Science Bulletin , 2009, DOI: 10.1007/s11434-009-0071-0
Abstract: The surface shape, structure, biomaterial and wettability of moth wings (10 NOCTUIDAE species) from the northeast region of China were qualitatively and quantitatively studied by means of a stereoscopic microscope, a scanning electronic microscope, fourier transform infrared spectroscopy(FT-IR) and the interface contact angle measurement. The observation shows that there are scales arranged like overlapping tiles on the surface of the moth wings. The shapes of the scales are different between species. They overlap horizontally and there is particular space vertically in the direction of the wing veins. The surface of the scale is structured by micron-class grooves and nanometer-class vertical gibbosities. The biomaterial components of the moth wing scale are mostly made up of protein, lipids and chitin. The observation also shows that the contact angle for wings with scales is in the range from 144.8° to 152.9°, while that for those without scales is from 90.0° to 115.9°. It indicates that the surfaces of the wings with scales are more hydrophobic. According as Cassie model, the equation of wettability on the NOCTUIDAE moth wing surface is established and the hydrophobic mechanism is analyzed. It is concluded that the hydrophobicity of the moth wings is induced by the multivariate coupling of the shape, structures and biomaterial of the scales.
Multivariate coupling mechanism of NOCTUIDAE moth wings’ surface superhydrophobicity
XiaoJun Wang,Qian Cong,JianJun Zhang,YanLing Wan,

科学通报(英文版) , 2009,
Abstract: The surface shape, structure, biomaterial and wettability of moth wings (10 NOCTUIDAE species) from the northeast region of China were qualitatively and quantitatively studied by means of a stereoscopic microscope, a scanning electronic microscope, fourier transform infrared spectroscopy(FT-IR) and the interface contact angle measurement. The observation shows that there are scales arranged like overlapping tiles on the surface of the moth wings. The shapes of the scales are different between species. They overlap horizontally and there is particular space vertically in the direction of the wing veins. The surface of the scale is structured by micron-class grooves and nanometer-class vertical gibbosities. The biomaterial components of the moth wing scale are mostly made up of protein, lipids and chitin. The observation also shows that the contact angle for wings with scales is in the range from 144.8° to 152.9°, while that for those without scales is from 90.0° to 115.9°. It indicates that the surfaces of the wings with scales are more hydrophobic. According as Cassie model, the equation of wettability on the NOCTUIDAE moth wing surface is established and the hydrophobic mechanism is analyzed. It is concluded that the hydrophobicity of the moth wings is induced by the multivariate coupling of the shape, structures and biomaterial of the scales. Supported by the Key Research Project under the National Natural Science Foundation (Grant No. 50635030), Specialized Research Fund for Doctoral Program of Higher Education of China (Grant No. 20040183048) and Graduate Student Innovation Foundation of JiLin University (985 Project) (Grant No. 20080210)
An Analysis of the Attribute of Accounting Discipline from the Historical Process of Accounting Development  [PDF]
Wei Cong
iBusiness (IB) , 2013, DOI: 10.4236/ib.2013.53B027
Abstract:

Undeniably, in today all aspects of the social life are inseparable from the accounting, but the position of accounting was unclear, and the academic circles debated ceaselessly. When we can not see the direction clearly, we can take a look back at history. From the history of the development process of accounting, we can look for the clues of the attribute of accounting. The history would give us a new perspective of the researching.

Increased Frequency of Pink Bollworm Resistance to Bt Toxin Cry1Ac in China
Peng Wan, Yunxin Huang, Huaiheng Wu, Minsong Huang, Shengbo Cong, Bruce E. Tabashnik, Kongming Wu
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0029975
Abstract: Transgenic crops producing insecticidal proteins from Bacillus thuringiensis (Bt) kill some key insect pests, but evolution of resistance by pests can reduce their efficacy. The main approach for delaying pest adaptation to Bt crops uses non-Bt host plants as “refuges” to increase survival of susceptible pests. To delay evolution of pest resistance to transgenic cotton producing Bt toxin Cry1Ac, the United States and some other countries have required refuges of non-Bt cotton, while farmers in China have relied on “natural” refuges of non-Bt host plants other than cotton. The “natural” refuge strategy focuses on cotton bollworm (Helicoverpa armigera), the primary target of Bt cotton in China that attacks many crops, but it does not apply to another major pest, pink bollworm (Pectinophora gossypiella), which feeds almost entirely on cotton in China. Here we report data showing field-evolved resistance to Cry1Ac by pink bollworm in the Yangtze River Valley of China. Laboratory bioassay data from 51 field-derived strains show that the susceptibility to Cry1Ac was significantly lower during 2008 to 2010 than 2005 to 2007. The percentage of field populations yielding one or more survivors at a diagnostic concentration of Cry1Ac increased from 0% in 2005–2007 to 56% in 2008–2010. However, the median survival at the diagnostic concentration was only 1.6% from 2008 to 2010 and failure of Bt cotton to control pink bollworm has not been reported in China. The early detection of resistance reported here may promote proactive countermeasures, such as a switch to transgenic cotton producing toxins distinct from Cry1A toxins, increased planting of non-Bt cotton, and integration of other management tactics together with Bt cotton.
Adaptive Threshold Background Modeling Algorithm Based on Chebyshev Inequality
一种基于切比雪夫不等式的自适应阈值背景建模算法

ZHANG Kun,WANG Cui-rong,WAN Cong,
张琨
,王翠荣,万聪

计算机科学 , 2013,
Abstract: 背景建模是实现运动目标检测与跟踪的关键技术之一。在实时视频监控系统中,对背景建模算法的运行时间及所提取出的背景图像的实时性有很高的要求,针对这一问题,提出了一种基于切比雪夫不等式的自适应阈值背景建模算法。算法利用切比雪夫不等式计算像素点色度变化的概率估计值,提出了一种自适应阈值分类方法,它将像素点快速分类为前景点、背景点及可疑点,再利用核密度估计方法对可疑点进行进一步分类,最后利用背景更新算法提取实时背景图像。实验结果证明,该算法能快速有效地区分特征明显的背景点与前景点,提高了背景图像提取的速度,对可疑点利用核密度估计方法降低了背景分割的误差,背景建模效果理想,运算速度快,适用于实时视频监控系统。
6-Cyclohexylmethyl-5-ethyl-2-[(2-oxo-2-phenylethyl)sulfanyl]pyrimidin-4(3H)-one
Wan-Lu Yan,Qiong Guo,Cong Li,Xiao-Ying Ji
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811003175
Abstract: In the title compound, C21H26N2O2S, the cyclohexane ring adopts a chair conformation. The angle at the methylene bridge linking the pyrimidine and cyclohexane rings is 113.41 (13)°. This is in the range considered optimal for maximum activity of non-nucleoside reverse transcriptase inhibitors. In the crystal, molecules are connected into centrosymmetric dimers via pairs of N—H...O hydrogen bonds.
Analysis on the Mindbugs in Information Technology Service Management Project Implementation  [PDF]
Jiangping Wan, Dan Wan
Technology and Investment (TI) , 2011, DOI: 10.4236/ti.2011.23019
Abstract: J.N.Warfield identified and classified the mindbugs (cognitive barriers), and put forward the process-based work program of complexity, and argued that the complexity could be managed through design. The eleven kinds of common mindbugs are figured out among the twenty five kinds of mindbugs with questionnaire. The relationship between the six root risk factors of implementation of the information technology service management (ITSM) project and these common mindbugs are also identified. It is found that the influence of mindbugs of habit is most serious in the ITSM project because the implementation of ITSM project would change the original work habits and methods of people. Finally, some recommendations are put forward to mitigate the root risk factors.
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