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Search Results: 1 - 10 of 13805 matches for " Chunlei Fan "
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Spectral Analysis of Water Reflectance for Hyperspectral Remote Sensing of Water Quailty in Estuarine Water  [PDF]
Chunlei Fan
Journal of Geoscience and Environment Protection (GEP) , 2014, DOI: 10.4236/gep.2014.22004
Abstract: Hyperspectral remote sensing offers an effective approach for frequent, synoptic water quality measurements over a large spatial extent. However, the optical complexity of case 2 water makes the water quality monitoring by remote sensing in estuarine water a challenge. The prime objective of this study was to develop algorithms for hyperspectral remote sensing of water quality based on in situ spectral measurement of water reflectance. In this study, water reflectance spectra R(λ) were acquired by a pair of Ocean Optic 2000 spectroradiometers during the summers from 2008 to 2011 at Patuxent River, a tributary of Chesapeake Bay, USA. Simultaneously, concentrations of chlorophyll a and total suspended solids (TSS), as well as absorption of colored dissolved organic matter (CDOM) were measured. Empirical models that based on spectral features of water reflectance generally showed good correlations with water quality parameters. The retrieval model that using spectral bands at red/NIR showed a high correlation with chlorophyll a concentration (R2 = 0.81). The ratio of green to blue spectral bands is the best predictor for TSS (R2 = 0.75), and CDOM absorption is best correlated with spectral features at blue and NIR regions (R2 = 0.85). These empirical models were further applied to the ASIA Eagle hyperspectral aerial imagery to demonstrate the feasibility of hyperspectral remote sensing of water quality in the optical complex estuarine waters.
Speed-up Multi-modal Near Duplicate Image Detection  [PDF]
Chunlei Yang, Jinye Peng, Jianping Fan
Open Journal of Applied Sciences (OJAppS) , 2013, DOI: 10.4236/ojapps.2013.31B004
Abstract: Near-duplicate image detection is a necessary operation to refine image search results for efficient user exploration. The existences of large amounts of near duplicates require fast and accurate automatic near-duplicate detection methods. We have designed a coarse-to-fine near duplicate detection framework to speed-up the process and a multi-modal integra-tion scheme for accurate detection. The duplicate pairs are detected with both global feature (partition based color his-togram) and local feature (CPAM and SIFT Bag-of-Word model). The experiment results on large scale data set proved the effectiveness of the proposed design.
A Case Study on Climate Change Response and Adaptation: Fictional Aysese Islands in the South Pacific  [PDF]
Amy Cannon, Peter Lalor, Shobha Sriharan, Chunlei Fan, Gulnihal Ozbay
American Journal of Climate Change (AJCC) , 2014, DOI: 10.4236/ajcc.2014.35040
Abstract: The Intergovernmental Panel on Climate Change (IPCC), established by the United Nations and World Meteorological Organization, has determined that humans have very likely influenced a net warming to the Earth from the increase of greenhouse gases, aerosols and land use changes. This warming has caused the amount of ice on the Earth to continue to decrease and sea levels to rise. In addition, extreme precipitation events are happening more often in selected regions of the world. A case study that assesses the impacts of, and adaptations to, these changes in climate is presented here. Two modeling programs, Sim CLIM and Train CLIM, (CLIM Systems, Hamilton, New Zealand) were used to support assessments for water supply, coastal zones and tropical cyclones in a fictitious island group in the South Pacific region. In the case study, a consulting group was “hired” to carry out these assessments. A final analysis and synthesis report were created to help the Ministry of the Environment of the made-up nation decide how to improve the governmental actions to address the real concerns posed by changing climate and sea level. Although a simulated island group is used in this article, there are sincere concerns about climate change and extreme weather events in this part of the world. It is important to address the real and dangerous threat that these islands and people face in the wake of a changing climate and a growing global society.
The Relationship between Attitude Strength and Attitude Accessibility in Brand Evaluation

Fan Chunlei,Zhang Ailing,

心理学报 , 2007,
Abstract: Introduction Brand attitude accessibility is related to brand attitude strength, which is usually viewed as a well-established feature of attitude strength. However, there might be accessibility difference between positive and negative attitudes, and the difference might influence the relationship between attitude accessibility and attitude strength. This study focused on whether the relationship between attitude accessibility and attitude strength is symmetric when brand evaluations changed from positive to negative. Paper-and-pencil questionnaire and response-time technique were used to investigate this question. Our hypothesis was that, a strong correlation between attitude accessibility and attitude strength would exist only when judgment on brand attributes was positive. Method One hundred seventy female subjects were consumers of the same brand of functional food (average age = 46 years old, SD=6.21), recruited through the telephone by research assistants. The subjects were asked to rate the importance of each brand attributes (29 items) about functional foods. At the first stage, subjects were asked to complete a 5 point likert-type questionnaire, to indicate the importance of each brand attributes (where 1 = least important, 5 = most important). Their responses were defined as the degree of brand attitude strength. At the second stage, brand attitude accessibility was measured. Subjects were asked to give a "Yes/No" judgment on the above mentioned responses (memory-based). If one attribute was rated as most important or more important at the first stage, the subjects should give a "Yes" response; if one attribute was rated as least important or less important at the first stage, the subjects should give a "No" response. Their response time for every judgment was recorded by the computer, as indicator of brand accessibility. Results (a) Average response speed for positive judgment on brand attributes was significantly faster than that for negative judgment on brand attributes(2993ms vs. 3617ms, F=28.72,p<0.0001). (b) When subjects had positive judgments on brand attributes, a significant power function relationship between attitude accessibility and attitude strength existed (R2=0.97, p<0.001). In contrast, when subjects had negative judgments on brand attributes, we did not find such significant function relationship (R2=0.48, p=0.06). (c) When subjects had neutral attitudes toward some brand attributes, they were asked to make a definite judgment, either positive or negative. Under this circumstance, 67% of subjects gave a negative response, and the negative response time was longer than their positive response time. Conclusion Our results indicated that, accessibility difference between positive and negative attitude did exist in brand evaluation, which supported the argument of asymmetric association between positive and negative attitude. A strong correlation between attitude strength and attitude accessibility existed only when the s
Study on the Qiang’s Costume Culture—A Case Study of the Qiang’s Costumes in Li County  [PDF]
Chunlei Song, Bing Zhao
Open Journal of Social Sciences (JSS) , 2018, DOI: 10.4236/jss.2018.66020
Abstract: As a part of fifty-six ethnic minorities, the Qiang ethnic has long-established national culture and is also an important part of intangible cultural heritage. The article outlines the connotation of the Qiang’s culture, elaborates the aesthetic characteristics, pattern characteristics, color characteristics, and compositional characteristics of the Qiang’s costumes. Taking the Qiang’s costumes in the Mao County area as an example, through analysing the materials of Qiang’s costumes in the Mao County, the paper deeply analyzes the differences in cultural customs and dressing habits between different regions. The unique geographical features of Li County’s clothing are summarized based on these differences. The Qiang ethnic calls itself “er ma” or “er mie”, and it is also being called “nation on the cloud”. They are mainly distributed in Maoxian, Wenchuan, Lixian, Songpan and Heishui counties in Aba Tibetan and Qiang Autonomous Prefecture of Sichuan Province and Beichuan Qiang Autonomous County in Mianyang City. The rest are scattered in Danba County in Ganzi Tibetan Autonomous Prefecture of Sichuan Province, Pingwu County in Mianyang City and Jiangkou County and Shiji County in Tongren Prefecture of Guizhou Province. This article focuses on Qiang costume culture in Li County of Aba Tibetan and Qiang Autonomous Prefecture in Sichuan Province.
Researches on Intelligence and Mental Speed

Wang Ling,Shen Zheng,Fan Chunlei,

心理科学进展 , 2006,
Abstract: There is now a new tendency in the field of intelligence, researchers attempt to discover the correlation between psychometric intelligence to a cognitive or psychophysical variable, and employ cognitive and biological approaches in the same studies. This research emphasis is mental speed, which is indexed by inspection time (IT), reaction time, ERP or nerve conduction velocity. Many studies suggest that, in IT task, the patterns of amplitude and latency period of ERP are different between higher IQ and lower IQ participants. Many findings demonstrate that both information processing speed and nerve conduction velocity have a higher correlation with intelligence g factor, and that the cross-disciplinary studies on the relationship between intelligence and mental speed have become an important approach.
Thermal response and optical absorptance of metals under femtosecond laser irradiation  [PDF]
Anatoliy Y Vorobyev, Chunlei Guo
Natural Science (NS) , 2011, DOI: 10.4236/ns.2011.36068
Abstract: A detailed study on correlation between residual thermal response of a sample and its optical absorptance change due to laser-induced sur-face structural modifications in multi-shot fem-tosecond laser irradiation is performed. Ex-periments reveal an overall enhancement for residual thermal coupling and absorptance in air. Surprisingly, residual thermal coupling in air shows a non-monotonic dependence on pulse number and reaches a minimum value after a certain number of pulses, while these behaviors are not seen in absorptance. In vacuum, how-ever, both suppression and enhancement are seen in residual energy coupling although ab-sorptance is always enhanced. From these ob-servations, it appears that air plasma plays a dominant role in thermal coupling at a relatively low number of applied pulses, while the forma-tion of craters plays a dominant role at a high number of pulses.
Multiscale Numerical Study of 3D Polymer Crystallization during Cooling Stage
Chunlei Ruan
Mathematical Problems in Engineering , 2012, DOI: 10.1155/2012/802420
Abstract: We aim to study the behavior of polymer crystallization during cooling stage in injection molding more accurately, the multiscale model and multiscale algorithm proposed in our previous work (Ruan et al., 2012) have been extended to the 3D polymer crystallization case. Our multiscale model incorporates two distinct length scales: a coarse grid for the heat diffusion and a fine grid for the crystal morphology evolution (nucleation, growth, and impingement). Our multiscale algorithm couples the different methods on different length scales, namely, the finite volume method (FVM) on the coarse grid and the pixel coloring method on the fine grid. By using these multiscale model and multiscale algorithm, simulations for 3D polymer crystallization are carried out. Macroscopic variables, for example, temperature, relative crystallinity, as well as the microscopic structural characters, for example, crystal morphology development, and mean size of spherulites, are investigated at various cooling conditions. We also show the importance of coupling heat transfer with crystallization as well as 3D numerical studies.
Martial Arts, Violence, and Public Schools
Chunlei Lu
Brock Education : a Journal of Educational Research and Practice , 2008,
Abstract: Martial arts have become one of the most popular physical activities amongst children and youth worldwide; however, there are concerns among Western parents and school administrators that including these activities in school programs may lead to incidents of violence. Others, however, maintain that this is a concern caused by the false image of martial arts (as propagated in entertainment and pop culture), and stemming from an ignorance of the true values promoted by legitimate Asian martial arts practitioners. This paper explores the philosophical and theoretical concepts upon which Asian martial arts disciplines are founded, and provides ample research to reveal that martial arts as practiced in Eastern tradition de-emphasize violence, competition, and combat. Further, this paper illustrates that practicing martial arts in line with Eastern precepts of martial virtue, promotes a healthy active lifestyle, and can in fact discourage, rather than encourage, incidents of violence at schools.
Search for CP Violation in B0s to J/psi phi at CDF
Chunlei Liu
Physics , 2008,
Abstract: The CKM mechanism is well established as the dominant mechanism for $CP$ violation, which was first discovered in the neutral kaons in 1964 \cite{ref:cpkaon}. To search for new sources of CP violation, one can exploit a handful of systems in which the standard model makes a precise prediction of CP violation. In the $B^0_s\to J/\psi \phi$ system, CP violation in the interference of mixing and decay is precisely predicted in the standard model, the prediction being very close to zero. The CDF experiment reconstructs about 2000 signal events in 1.35 fb$^{-1}$ of luminosity. We obtain a confidence region in the space of the parameters $\beta_s$, the CP phase, and $\Delta\Gamma$, the width difference. This result is 1.5 $\sigma$ from the standard model prediction.
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