OALib Journal期刊

ISSN: 2333-9721




2019 ( 6 )

2018 ( 79 )

2017 ( 88 )

2016 ( 83 )


匹配条件: “Hongwei Yuan” ,找到相关结果约22899条。
Subjective Logic-Based Anomaly Detection Framework in Wireless Sensor Networks
Jinhui Yuan,Hongwei Zhou,Hong Chen
International Journal of Distributed Sensor Networks , 2012, DOI: 10.1155/2012/482191
Abstract: In existing anomaly detection approaches, sensor node often turns to neighbors to further determine whether the data is normal while the node itself cannot decide. However, previous works consider neighbors' opinions being just normal and anomalous, and do not consider the uncertainty of neighbors to the data of the node. In this paper, we propose SLAD (subjective logic based anomaly detection) framework. It redefines opinion deriving from subjective logic theory which takes the uncertainty into account. Furthermore, it fuses the opinions of neighbors to get the quantitative anomaly score of the data. Simulation results show that SLAD framework improves the performance of anomaly detection compared with previous works.
Analysis of Main Influencing Factors of Scientific Data Sharing in Universities  [PDF]
Hongwei Yuan, Yan Liu, Song Huang
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105277
At present, China is in the critical period of implementing innovation-driven development strategy and building a strong country in science and technology. Strengthening and standardizing scientific data management is an important means to strengthen China’s scientific and technological innovation capacity building. As an important base for scientific data generation, what are the attitudes, cognitions, behavioral characteristics and influencing factors of researchers on scientific data sharing? Based on the theory of technology acceptance model and planning behavior, this paper constructs the influencing factors model of scientific data sharing willingness in universities, discusses the factors affecting the scientific data sharing of universities, and draws three main factors affecting the scientific data sharing of universities: individual characteristics, subjective norms, systems characteristics. Finally, from the aspects of service content, incentive mechanism, literacy education, platform architecture, etc., scien-tific data sharing services of university libraries are carried out.
Insight into Role of Selection in the Evolution of Polyglutamine Tracts in Humans
Hongwei Li, Jing Liu, Keliang Wu, Yuan Chen
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0041167
Abstract: Glutamine tandem repeats are common in eukaryotic proteins. Although some studies have proposed that replication slippage plays an important role in shaping these repeats, the role of natural selection in glutamine tandem repeat evolution is somewhat unclear. In this study, we identified all of the glutamine tandem repeats containing four or more glutamines in human proteins and then estimated the nonsynonymous (dN) and synonymous (dS) substitution rates for the regions flanking the glutamine tandem repeats and the proteins containing them. The results indicated that most of the proteins containing polyglutamine (polyQ) tracts of four or more glutamines have undergone purifying selection, and that the purifying selection for the regions flanking the repeats is weaker. Additionally, we observed that the conserved repeats were under stronger selection constraints than the nonconserved repeats. Interestingly, we found that there was a higher level of purifying selection for the regions flanking the polyQ tracts encoded by pure CAG codons compared with those encoded by mixed codons. Based on our findings, we propose that selection has played a more important role than was previously speculated in constraining the expansion of polyQ tracts encoded by pure codons.
Assessment of Runoff and Sediment Yields Using the AnnAGNPS Model in a Three-Gorge Watershed of China
Lizhong Hua,Xiubin He,Yongping Yuan,Hongwei Nan
International Journal of Environmental Research and Public Health , 2012, DOI: 10.3390/ijerph9051887
Abstract: Soil erosion has been recognized as one of the major threats to our environment and water quality worldwide, especially in China. To mitigate nonpoint source water quality problems caused by soil erosion, best management practices (BMPs) and/or conservation programs have been adopted. Watershed models, such as the Annualized Agricultural Non-Point Source Pollutant Loading model (AnnAGNPS), have been developed to aid in the evaluation of watershed response to watershed management practices. The model has been applied worldwide and proven to be a very effective tool in identifying the critical areas which had serious erosion, and in aiding in decision-making processes for adopting BMPs and/or conservation programs so that cost/benefit can be maximized and non-point source pollution control can be achieved in the most efficient way. The main goal of this study was to assess the characteristics of soil erosion, sediment and sediment delivery of a watershed so that effective conservation measures can be implemented. To achieve the overall objective of this study, all necessary data for the 4,184 km 2 Daning River watershed in the Three-Gorge region of the Yangtze River of China were assembled. The model was calibrated using observed monthly runoff from 1998 to 1999 (Nash-Sutcliffe coefficient of efficiency of 0.94 and R 2 of 0.94) and validated using the observed monthly runoff from 2003 to 2005 (Nash-Sutcliffe coefficient of efficiency of 0.93 and R 2 of 0.93). Additionally, the model was validated using annual average sediment of 2000–2002 (relative error of ?0.34) and 2003–2004 (relative error of 0.18) at Wuxi station. Post validation simulation showed that approximately 48% of the watershed was under the soil loss tolerance released by the Ministry of Water Resources of China (500 t·km ?2·y ?1). However, 8% of the watershed had soil erosion of exceeding 5,000 t·km ?2·y ?1. Sloping areas and low coverage areas are the main source of soil loss in the watershed.
A large dumbbell glossopharyngeal schwannoma involving the vagus nerve: a case report and review of the literature
Hongyu Zhao, Xiaodong Li, Qingjie Lv, Yuhui Yuan, Hongwei Yu
Journal of Medical Case Reports , 2008, DOI: 10.1186/1752-1947-2-334
Abstract: We present one case of schwannoma originating from the ninth cranial nerve with palsies of the trigeminal nerve, facial-acoustic nerve complex, and vagus nerve in addition to ninth nerve dysfunction. Magnetic resonance imaging showed tumors located in the cerebellopontine angle with extracranial extension via the jugular foramen, with evident enhancement on post-contrast scan. Surgical management single-staged with the help of gamma knife radiosurgery achieved total removal.Glossopharyngeal schwannoma is devoid of clinical symptoms and neurological signs. High resolution magnetic resonance imaging may play a key role as an accurate diagnostic tool. A favorable option of approach and appropriate planning of surgical strategy should be the goal of operation for this benign tumor.Intracranial schwannomas constitute approximately 8–10% of all primary brain tumors [1]. Schwannomas arising from the 9th, 10th, and 11th cranial nerves (also called jugular foramen schwannoma) without associated neurofibromatosis are relatively uncommon, and comprise only 2.9% of all intracranial schwannomas [2]. In extremely rare instances, they arise from the glossopharyngeal nerve [3]. In this report, we present one case of glossopharyngeal neurinoma and review similar cases from the literature.A 19-year-old girl came to our attention because of a history of decreased hearing and tinnitus in the right ear dating back 6 years, with a progressive swaying to the right side, accompanied by hoarseness and dysphagia for 3 months. She also complained of mild headache associated with nausea or vomiting. Neurological examination showed corneal reflex was absent on the right side. She had right side facial palsy with loss of taste. Weakness of gag reflex was present bilaterally. She had cerebellar ataxia with swaying to the right side.Magnetic resonance imaging (MRI) revealed a large solid tumor in the right cerebellopontine angle (CPA) with extracranial extension via the jugular foramen (JF). The m
The effect of α-helix comformation on interaction between model oligopeptides and polymers
JiHong Li,QinQin Dang,HongWei Sun,RuiTao Cha,Zhi Yuan
Chinese Science Bulletin , 2008, DOI: 10.1007/s11434-008-0065-3
Abstract: The study of interactions between peptides and synthetic polymers has aroused considerable interest recently. In the present paper, the interaction mechanism between adsorbent DMAPAM and two peptides, VVRGCTWW(V8) and CTWW(C4), was investigated at molecular level by NMR and molecular stimulation. The results demonstrated that the conformation of oligopeptides played a vital role in their adsorption capacity on the adsorbent. Weak interactions could incorporate with each other between V8 and DMAPAM because there was a hydrophobic cleavage in α-helix conformation of V8. So the adsorption capacity of DMAPAM to V8 was higher. This was significant to explore the interaction mechanism between peptides and biomaterials.
Some Skills of Using Dialog On-line Retrieval Instructions

Yuan Hongwei Chen Renwen,

现代图书情报技术 , 2001,
Abstract: Dialog on-line retrieval system is characterized by its' high speed, convenience and comprehensive capacity, but it is expensive to use. So, how to cost less money to get more useful and all-sided information is of great importance. This paper introduces some skills about how to make best use of dialog on-line searching system according to author's experience.

Li Hongwei,Yuan Baozong,

电子与信息学报 , 1999,
Abstract: This paper considers the single record estimators for cumulants of sinusoids in additive noise. The strong convergence of sample autocorrelation is proved, and the convergence rate is obtained. Conditions for the fourth-order ergodicity are given. Under these conditions, the strong convergence of sample estimates of the fourth-order moment and cumulant is established, and the convergence rate is obtained. Finally, a numerical example is given to verify the results.
Adaptively Segmenting Angular Sectors for Radar HRRP Automatic Target Recognition
Bo Chen,Hongwei Liu,Li Yuan,Zheng Bao
EURASIP Journal on Advances in Signal Processing , 2008, DOI: 10.1155/2008/641709
Abstract: In this paper the manifold geometry in radar high-resolution range profile (HRRP) is firstly explored, and then, according to the characteristics of target pose sensitivity, a method of adaptively segmenting the aspect sectors is proposed for HRRP recognition through evaluating the curvature of HRRP manifold. Promising experimental results are presented for measured radar data.
Identification and Functional Analysis of A Novel Candidate Oncogene RAP2B in Lung Cancer
Guobin FU,Yan LIU,Jinsong YUAN,Hongwei ZHENG
Chinese Journal of Lung Cancer , 2009,
Abstract: Background and objective RAP2B is one of the 50 novel candidate genes cloned from the differential expression cDNA libraries constructed in lung cancer cells. Though RAP2B contains conserved domain and belongs to Ras superfamily, the function of RAP2B in carcinogenesis is still poorly understood. The aim of this study is to explore the roles of RAP2B gene in carcinogenesis. Methods RT-PCR was applied to examine transcriptional status of RAP2B in the tumor and corresponding adjacent tissues collected from 27 patients with lung squamous cell carcinoma. RAP2B expression plasmid was constructed and transfected into Rat1 cells to evaluate the in vitro transformation ability through colony formation assay. Reporter gene assay was performed to reveal the relationship between RAP2B geneand NF-kappaB pathway. Results About 67% (18/27) of tumor tissues show higher mRNA expression than that in the corresponding adjacent normal tissues. Typical transforming focus formation was observed in Rat1 cells which were transfected with RAP2B gene. The reporter gene assay data showed that RAP2B activated NF-kappaB pathway more than3 folds compared with the mock vector. Conclusion RAP2B may be a novel candidate oncogene that plays important roles in carcinogenesis through activation of NF-kappaB pathway.

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