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Search Results: 1 - 10 of 120075 matches for " Xianyou Wang "
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The Poetics of Foregrounding: The Lexical Deviation in Ulysses
Xianyou Wu
Theory and Practice in Language Studies , 2011, DOI: 10.4304/tpls.1.9.1176-1184
Abstract: In Ulysses, there is a whole repertoire of linguistic inventiveness, creativity and play in the form of new words and odd constructions, which calls for our close reading. Lexical Inventiveness, as I argue, best characterizes Joyce’s lexical revolution in which both creativity and playfulness of language are fully stressed. To have a better understanding of them, this chapter is to investigate special conversions, unusual compounds and comic word-play by means of classification and comparison. Our studies show: (1) Joyce’s defamiliarized lexis is more motivated than arbitrary as he made the best use of the accepted lexical resources; (2) As for various word formations, we find that Joyce’s verb conversion follows fairly well the word-formation rules, his compounds deviate a lot from the rules and his jumbled compounds are, in its true sense, what Bakhtin calls “linguistic carnivalization”; (3) Semantically, neologisms, though fleeting, are terse, lively, exciting, expressive, and above all true to life. (4) Perfect truth was perfect language.” (French, 1982). The point with his linguistic inventiveness is to make full use of the visual and auditory textures of words, including their musical nature, and to increase the expressive power of literary language, and thus to achieve the special artistic effects of “defamiliarization” by increasing the difficulty of reading and lengthening their time of perception, and it is in grappling with linguistic deviation, creativity and indeterminateness that lies much of the pleasure of reading Ulysses. So Joyce’s linguistic inventiveness is part of his artistic ingenuity in fiction and calls for further studies.
Preparation and Capacitive Behavior of Dandelion-Like - Nanofibre/Activated Carbon Microbeads Composite for the Application of Supercapacitor
Li Bai,Xianyou Wang,Xingyan Wang,Xiaoyan Zhang,Wanmei Long,Hong Wang,Jiaojiao Li
International Journal of Electrochemistry , 2011, DOI: 10.4061/2011/692603
Abstract: Dandelion-like -manganese dioxide ( - ) nanofibre/activated carbon microbeads (ACMBs) composite is prepared by an in situ coating technique. The structure and morphology of the composite are characterized by scanning electron microscopy and X-ray diffraction. The results show that - nanofibre is uniformly encapsulated on the surface of ACMB, and the composite finally becomes a dandelion-like microbead. Cyclic voltammetry, galvanostatic current charge/discharge, and cycle life measurements are used to evaluate the electrochemical behaviors of the composite. Since the composite is able to undergo pseudofaradic charge transfer reactions and hereto contributes together with the double-layer effect to the total capacitance of the material, the specific capacitance of the composite is as high as 375.9?F?g?1 at a scan rate of 1?mV?s?1, which is significantly higher than the pure ACMB. Besides, the capacitance retention of the supercapacitor using the composite as electrode-active material keeps still 93% after 1000 cycles. 1. Introduction Currently, electrochemical supercapacitors are extensively studied as auxiliary energy storage devices to be used with rechargeable batteries. Their applications include electric vehicles, renewable energy, mobile generator devices, direct-current power systems, and uninterruptible power supplies [1]. On the basis of the energy storage mechanism, supercapacitors can be classified into two categories [2], namely the electrical double-layer capacitor and the faradic pseudocapacitor. The capacitance of the former comes from the charge accumulation at the electrode/electrolyte interface, therefore, strongly depending on the surface area of the electrode accessible to the electrolyte. The capacitance of the latter is due to the reversible faradic redox reaction of electro-active species on the electrode, such as surface functional groups and transition metallic oxides. It is obvious that the electrode takes the important part in the development of supercapacitors. Carbon microbeads have several advantages, such as high electrical conductivity, good fluidity, excellent sphericity, easy-to-control pore size distribution and a relatively low cost [3]. Usually, the carbon materials only possess double-layer capacitance, while metallic oxide possesses faradic pseudocapacitance, and the faradic pseudocapacitance is almost 10–100 times higher than double-layer capacitance [4]. Transition metallic oxides have been widely studied as promising materials for electrochemical capacitors due to their redox chemistry, large pseudocapacitance,
Investigation of the Performance of - /C as the Anode Catalyst of Direct Borohydride-Hydrogen Peroxide Fuel Cell
Hong Wang,Ying Wang,Xianyou Wang,Peiying He,Lanhua Yi,Wei Yi,Xue Liu
International Journal of Electrochemistry , 2011, DOI: 10.4061/2011/129182
Abstract: The carbon-supported bimetallic Au-Pd catalyst with core-shell structure is prepared by successive reduction method. The core-shell structure, surface morphology, and electrochemical performances of the catalysts are characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), ultraviolet-visible absorption spectrometry, linear sweep voltammetry, and chronopotentiometry. The results show that the Au-Pd/C catalyst with core-shell structure exhibits much higher catalytic activity for the direct oxidation of NaBH4 than pure Au/C catalyst. A direct borohydride-hydrogen peroxide fuel cell, in which the Au-Pd/C with core-shell structure is used as the anode catalyst and the Au/C as the cathode catalyst, shows as high as 68.215?mW?cm?2 power density. 1. Introduction Fuel cells constitute an attractive class of renewable and sustainable energy sources alternative to conventional energy sources such as petroleum that has finite reserves. Among all types of fuel cells, the direct borohydride-hydrogen peroxide fuel cell (DBHFC) has recently attracted increasing attentions because of some excellent features such as high open circuit potential, low operation temperature, and high power density [1–8]. The DBHFC is comprised of oxidation at the anode and H2O2 reduction at the cathode; thus, it can be used as a promising power source for space and underwater applications. Generally, the key of development of DBHFC is anode electrocatalyst Cao et al. [9] have prepared Au/Ni-foam electrode by spontaneous deposition of Au nanoparticles on nickel foam substrates and achieved an open-circuit voltage of about 1.07?V and a peak power density of 100?mW?cm?2 at 170?mA?cm?2 and 0.6?V at 60°C. Chatenet et al. [10] reported that electrooxidation of can exchange about 7.5 electrons on Au and Ag electrodes in contrast to about 4 electrons on Pt electrode. The high electron utilization efficiencies of Au and Ag towards electrooxidation are attributed to their low activity towards hydrolysis. However, the catalyst, which causes the low activity towards hydrolysis, simultaneously has a low catalytic activity towards electrochemical oxidation reaction. Thus, it is very important for DBHFC application to develop high-activity electrocatalysts for the borohydride oxidation reaction (BOR). In our previous works, high-activity catalysts such as carbon-supported hollow gold nanoparticles (HAu/C) [11, 12] and AuCo/C [13] have been studied. Usually, the core-shell structure is an effective morphology to enhance catalytic activity. The improvement of catalytic activity of
High Tap Density Spherical Cathode Material Synthesized via Continuous Hydroxide Coprecipitation Method for Advanced Lithium-Ion Batteries
Shunyi Yang,Xianyou Wang,Xiukang Yang,Ziling Liu,Qiliang Wei,Hongbo Shu
International Journal of Electrochemistry , 2012, DOI: 10.1155/2012/323560
Abstract: Spherical precursor with narrow size distribution and high tap density has been successfully synthesized by a continuous hydroxide coprecipitation, and is then prepared by mixing the precursor with 6% excess followed by calcinations. The tap density of the obtained powder is as high as 2.61?g? . The powders are characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), particle size distribution (PSD), and charge/discharge cycling. The XRD studies show that the prepared has a well-ordered layered structure without any impurity phases. Good packing properties of spherical secondary particles (about 12?μm) consisted of a large number of tiny-thin plate-shape primary particles (less than 1?μm), which can be identified from the SEM observations. In the voltage range of 3.0–4.3?V and 2.5–4.6?V, delivers the initial discharge capacity of approximately 175 and 214?mAh?g?1 at a current density of 32?mA?g?1, and the capacity retention after 50 cycles reaches 98.8% and 90.2%, respectively. Besides, it displays good high-temperature characteristics and excellent rate capability. 1. Introduction During the past decade, lithium ion batteries have been extensively investigated and widely used; they are not only required to enable the moderately charge/discharge rates applications like mobile phone and portable computer but also to meet an increasing need for new applications such as electric vehicles, which need power sources with both high energy and high power density. Layered LiNi0.5Mn0.5O2 is of great interest as a promising cathode material for lithium secondary batteries because of its higher theoretical capacity (280?mAh?g?1) and better structural stability [1–5]. However, some problems, such as uneasy preparation of stoichiometric phases [6], low tapping density [7], and poor rate capability [8], have to be overcome before it is massively applied in the lithium ion battery industry. Recently, the effects of cobalt doping on the structure and electrochemical behavior of LiNi0.5Mn0.5O2 had been reported by Li et al. [9], and the results showed that cobalt doping for LiNi0.5Mn0.5O2 can easily form stoichiometric Li[Ni0.5Mn0.5?x Cox]O2 compounds, which possess good electronic conductivity, and thus owning good rate capability. In the series of LiNi0.5Mn0.5?x CoxO2, Li[Ni0.5Mn0.3Co0.2]O2 can be considered as one of the most promising cathode materials for the application of lithium ion battery, because this composition compromises between the increase of the discharge capacity due to the Co3+ and the
RESEARCH ON THE MODE OF INFORMATION INTEGRATION IN TEXT -READING
文本阅读过程中信息的协调性整合

Mo Lei,Wang Ruiming,He Xianyou,
莫雷
,王瑞明,何先友

心理学报 , 2003,
Abstract: Moving window method was used to investigate the mode of information integration in text-reading. Subjects were 120 university students from South China Normal University. According to whether the elaboration on a characteristic of the protagonist was consistent with subsequent target action carried out by the protagonist, the experimental materials were divided into two categories: consistent version and qualified version, and each passage had two target sentences in different places. In experiment 1a&1b, the mode of information integration in long-memory was investigated, and in experiment 2a & 2b, that in work memory was investigated. The reading time of two target sentences were analyzed respectively with Paired Samples t Test. The results showed that in qualified condition, the background information both in long memory and work memory were integrated completely with the present information (called coordinating integration), and what's more, through this integrating, not only the coherence of text reading was maintained, but also the relative background information was constructed to be an information chunk.
The Vertical and Horizontal Spatial-Temporal Conceptual Metaphor Representation of Chinese Temporal Words  [PDF]
Tian Hong, Xianyou He, Richard Tillman, Xueru Zhao, Yumei Deng
Psychology (PSYCH) , 2017, DOI: 10.4236/psych.2017.811111
Abstract: People rely on spatial-temporal metaphor when they talk and think about abstract temporal concept. The purpose of this study is to further investigate the mechanism of the multi-dimensional spatial-temporal conceptual metaphor in Chinese. Using the spatial cuing paradigm, we examined the cognitive impact of the Chinese vertical and horizontal spatial-temporal metaphor, and explored the dominant dimension between the two metaphors in context. The results showed that the processing of temporal concepts for Chinese speakers involved not only the horizontal spatial-temporal metaphor, but also the vertical spatial-temporal metaphor. The horizontal dimension was the dominant dimension of spatial-temporal metaphor in the processing of temporal concepts in Chinese. The findings demonstrated that representation of time depends on representation of space, supporting the Metaphorical Structuring View.
Mechanochemical preparation of sulfur-doped nanosized TiO2 and its photocatalytic activity under visible light
Zhou Zhiqiang,Zhang Xianyou,Wu Ze,Dong Limin
Chinese Science Bulletin , 2005, DOI: 10.1007/BF02899637
Abstract: In order to make nanosized TiO2 photocatalyst responsive to visible light and effectively utilize solar energy, we have, for the first time, prepared S-doped nanosized TiO2 by a mechanochemical method with hydrolysis of TiCl4. The as-prepared S-doped nanosized TiO2 possesses strong absorption for visible light of 400–650 nm and shows high photocatalytic activity for decomposition of methylene blue under irradiation of visible light. The oxidation states of the S atoms incorporated into TiO2 were determined to be S6+ and S4+. The comparative study of fluorescence emission spectra shows that S-doping has also improved the separation of electron-hole pairs.
The Prospect of the Application of Neural Network in Text Retrieval
神经网络技术在文献检索中的应用前景

Niu Yun Zhu Xianyou,
牛耘
,朱献有

现代图书情报技术 , 1997,
Abstract: The neural network is a main branch of artificial intelligence application in text retrieval. The advantages of its main characters that can improve the effectiveness of text retrieval are analyzed. From the view of the adaptability to people s thinking convention,the prospect of the combination of the neural network and hypertext is discussed in this paper.
THE ACTIVATION AND INTEGRATION OF TEXT INFORMATION:COMPARISON BETWEEN GOOD AND POOR READERS
文本信息的激活与整合:阅读优生与差生的比较

He Xianyou,Lin Rituan,Mo Lei,
何先友
,林日团,莫雷

心理学报 , 2005,
Abstract: 探讨阅读优生与差生文本阅读过程中文本信息的激活与整合模式,包括3个实验。实验一通过运用不一致实验范式(inconsistent paradigrn)考察阅读优生与阅读差生能否形成整体连贯性与局部连贯性。结果发现,阅读差生难以形成整体连贯性。实验二运用探测一核证范式(probe—verification paradigrn)通过比较在三个位置后(人物特征描述、填充段落、目标句)的探测句的反应时间,探讨阅读差生不能形成整体连贯性的原因是由于不能激活先前的信息,还是整合信息时出现了问题。结果发现阅读差生与优生一样都可以激活先前的信息,说明阅读差生不能形成整体连贯性的原因可能是整合的问题。实验三进一步验证了阅读差生不能形成整体连贯性的原因是由于不能把已经激活的信息很好地加以整合所致。
THE ROLE OF TEMPORAL INFORMATION IN THE CONSTRUCTION OF SITUATION MODELS
时间信息在情景模型建构中的作用

He Xianyou,Zeng Xiangyan,
何先友
,曾祥炎

心理学报 , 2002,
Abstract: The study was to examine the role of temporal information in the construction of situation models, and to explore whether the participants could integrate the related facts into the situation models in a time-based fashion. Sswere 112 university students (Exp 1,2 and 3) in South China Normal University, China. It was probed in Experiment 1 and Experimental 2 that whether the participants could integrate definite and indefinite temporal information into situation models while there were clear spatial information, and whether they could integrate definite temporal information into situation models without clear spatial information in Experiment 3. The retrieval interference methodology was used to assess whether they integrated the related facts into situation models or not. The presence of interference indicated a lack of integration. In contrast, an absence or marked reduction in interference indicated integration. The results of three experiments all showed that the evidence of time-based integration was observed when the related events occurred at the same time. The results also implied that the temporal information alone in the reading materials would be sufficient for the participants to construct time-based situation models in the circumstances of no clear spatial information.
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