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Search Results: 1 - 10 of 120192 matches for " Jiannong WANG "
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The Relationship between Sustained Attention and PTSD Symptoms in Chinese Earthquake Orphans  [PDF]
Yan Wang, Xingli Zhang, Jiannong Shi
Open Access Library Journal (OALib Journal) , 2017, DOI: 10.4236/oalib.1103729
Abstract:
The authors examined sustained attention performance and PTSD symptoms in a sample of 281 orphans and non-orphans who experienced the Sichuan Earthquake in China. They hypothesized that the orphans had a higher possibility to risk for PTSD than non-orphans, and the former also might even tend to be more impulsive, allergic which might affect their basic cognitive skill-attention. The findings showed evidence of cognitive developmental stages, from vigilance to numbness and avoidance, in the continuous performance test (CPT) task by including pre-earthquake orphans. The post-earthquake orphans were still in a high level of vigilance and performed well in the CPT task when compared with the pre-earthquake orphans. The non-orphans with high possibility to risk for PTSD were the most concentrated and least impulsive. Given the potentially mutual relationship between sustained attention and posttraumatic stress disorder, careful consideration must be given to the treatment of traumatized children who present with PTSD symptoms. In accordance with practice guidelines, a duplex informant, duplex measure approach in the decision of educational plans for these children is strongly recommended.
An Energy-Aware Routing Protocol in Wireless Sensor Networks
Ming Liu,Jiannong Cao,Guihai Chen,Xiaomin Wang
Sensors , 2009, DOI: 10.3390/s90100445
Abstract: The most important issue that must be solved in designing a data gathering algorithm for wireless sensor networks (WSNS) is how to save sensor node energy while meeting the needs of applications/users. In this paper, we propose a novel energy-aware routing protocol (EAP) for a long-lived sensor network. EAP achieves a good performance in terms of lifetime by minimizing energy consumption for in-network communications and balancing the energy load among all the nodes. EAP introduces a new clustering parameter for cluster head election, which can better handle the heterogeneous energy capacities. Furthermore, it also introduces a simple but efficient approach, namely, intra-cluster coverage to cope with the area coverage problem. We use a simple temperature sensing application to evaluate the performance of EAP and results show that our protocol significantly outperforms LEACH and HEED in terms of network lifetime and the amount of data gathered.
Investigation on the Microstructure Homogenization in a TiAl Based Alloy Prepared by Elemental Powder Metallurgy
Yong LIU,Baiyun HUANG,Yuehui HE,Jiannong WANG,

材料科学技术学报 , 1999,
Abstract: 1.IntroductionTiAlbasedalloyhasdrawnintensiveattentioninhightemperaturestructuralmaterialarea,be-causeofitslowdensity,excellellthightemperaturepropertiesf1~2].However,itspoorworkabilityisanobstacleforitsapplication.Inordertoovercomethisdifficulty,extensiveworkhasbeenconductedtoim-proveitsworkabi1ityandnearnetshaping.Elementalpowdermetallurgy(EPM)hasbeenusedforfabricatingTiAl-basedalloys,becauseofitstwoapparentadvantages'lowcostandconvenientad-ditionofalloyelemellts3].Thistechniqueincludesr…
Preparation of Large Area Double-walled Carbon Nanotube Macro-films with Self-cleaning Properties

Ziping Wu,Qianfeng Xu,Jiannong Wang,Jie Ma,

材料科学技术学报 , 2010,
Abstract: Double-walled carbon nanotube (DWCNT) macro-films with large areas, excellent flexibility and superhy-drophobicity are reported. The area of the macro-film is larger than 30 cm×15 cm, and this large film can be bended, or folded without any damage, and even can be tailored freely. After a simple modification of perfluoroalkysilane, the surface of the macro-film shows excellent superhydrophobicity with a water contact angle of 165.7±2 deg. and sliding angle lower than 3 deg., the prepared superhydrophobic films showing excellent antifouling, self-cleaning and water-repellent functions. The topographic roughness and per°uoroalkysilane modification are found to contribute to the observed superhydrophobicity. Considering the outstanding electronic, chemical and mechanical properties of DWCNTs, it is expected that this multifunctional DWCNT macro-film has potential applications in many fields.
The relationship between executive functions and intelligence on 11- to 12-year-old children
Xiaoju Duan,Siwang Wei,Guiqing Wang,Jiannong Shi
Psychological Test and Assessment Modeling , 2010,
Abstract: This study investigated the structure of the executive functions and their roles in intelligence on sixty-one children aged 11- to 12-year-old. Six executive function tasks and one intelligence test were carried out in the study. The confirmatory factor analysis has shown that the executive functions could be separated into three factors: updating, inhibition and shifting. These three factors were moderately correlated with each other, but were clearly separated. The present results were in line with previous findings from adults. There were significant correlations between measures of updating, inhibition and shifting, and intelligence. However, only the correlation between updating and intelligence remained significant when the correlations among executive functions were controlled. The study gave some theoretical support to the effect of executive functions training on intelligence and self-regulated learning.
Dynamic Gut Microbiome across Life History of the Malaria Mosquito Anopheles gambiae in Kenya
Ying Wang, Thomas M. Gilbreath, Phanidhar Kukutla, Guiyun Yan, Jiannong Xu
PLOS ONE , 2011, DOI: 10.1371/journal.pone.0024767
Abstract: The mosquito gut represents an ecosystem that accommodates a complex, intimately associated microbiome. It is increasingly clear that the gut microbiome influences a wide variety of host traits, such as fitness and immunity. Understanding the microbial community structure and its dynamics across mosquito life is a prerequisite for comprehending the symbiotic relationship between the mosquito and its gut microbial residents. Here we characterized gut bacterial communities across larvae, pupae and adults of Anopheles gambiae reared in semi-natural habitats in Kenya by pyrosequencing bacterial 16S rRNA fragments. Immatures and adults showed distinctive gut community structures. Photosynthetic Cyanobacteria were predominant in the larval and pupal guts while Proteobacteria and Bacteroidetes dominated the adult guts, with core taxa of Enterobacteriaceae and Flavobacteriaceae. At the adult stage, diet regime (sugar meal and blood meal) significantly affects the microbial structure. Intriguingly, blood meals drastically reduced the community diversity and favored enteric bacteria. Comparative genomic analysis revealed that the enriched enteric bacteria possess large genetic redox capacity of coping with oxidative and nitrosative stresses that are associated with the catabolism of blood meal, suggesting a beneficial role in maintaining gut redox homeostasis. Interestingly, gut community structure was similar in the adult stage between the field and laboratory mosquitoes, indicating that mosquito gut is a selective eco-environment for its microbiome. This comprehensive gut metatgenomic profile suggests a concerted symbiotic genetic association between gut inhabitants and host.
Matrix Metalloproteinase-2 and -9 Secreted by Leukemic Cells Increase the Permeability of Blood-Brain Barrier by Disrupting Tight Junction Proteins
Saran Feng, Jiannong Cen, Yihong Huang, Hongjie Shen, Li Yao, Yuanyuan Wang, Zixing Chen
PLOS ONE , 2011, DOI: 10.1371/journal.pone.0020599
Abstract: Central nervous system (CNS) involvement remains an important cause of morbidity and mortality in acute leukemia, the mechanisms of leukemic cell infiltration into the CNS have not yet been elucidated. The blood-brain barrier (BBB) makes CNS become a refugee to leukemic cells and serves as a resource of cells that seed extraneural sites. How can the leukemic cells disrupt this barrier and invasive the CNS, even if many of the currently available chemotherapies can not cross the BBB? Tight junction in endothelial cells occupies a central role in the function of the BBB. Except the well known role of degrading extracellular matrix in metastasis of cancer cells, here we show matrix metalloproteinase (MMP)-2 and -9, secreted by leukemic cells, mediate the BBB opening by disrupting tight junction proteins in the CNS leukemia. We demonstrated that leukemic cells impaired tight junction proteins ZO-1, claudin-5 and occludin resulting in increased permeability of the BBB. However, these alterations reduced when MMP-2 and -9 activities were inhibited by RNA interference strategy or by MMP inhibitor GM6001 in an in vitro BBB model. We also found that the disruption of the BBB in company with the down-regulation of ZO-1, claudin-5 and occludin and the up-regulation of MMP-2 and -9 in mouse brain tissues with leukemic cell infiltration by confocal imaging and the assay of in situ gelatin zymography. Besides, GM6001 protected all mice against CNS leukemia. Our findings suggest that the degradation of tight junction proteins ZO-1, claudin-5 and occludin by MMP-2 and -9 secreted by leukemic cells constitutes an important mechanism in the BBB breakdown which contributes to the invasion of leukemic cells to the CNS in acute leukemia.
Metabonomics analysis of the urine of rats with Qi deficiency and blood stasis syndrome based on NMR techniques
Lin Li,JianNong Wang,JianXun Ren,JunFeng Xiang,YaLin Tang,JianXun Liu,Ding Han
Chinese Science Bulletin , 2007, DOI: 10.1007/s11434-007-0389-4
Abstract: Metabonomics analysis of the urine of rats with Qi deficiency and blood stasis syndrome has been performed by comparison with those of normal rats based on NMR techniques. The relative contents of formate, creatinine, 2-oxoglutarate (2-OG), citrate, taurine, trimethylamine-N-oxide(TMAO), succinate and hippurate in the urine of the rats with Qi deficiency and blood stasis syndrome have been changed. These results have provided evidence for understanding the mechanism and the therapy of Qi deficiency and blood stasis syndrome.
Positive Psychology:A New Trend in Psychology
积极心理学:一种新的研究方向

Li Jinzhen,Wang Wenzhong,Shi Jiannong,
李金珍
,王文忠,施建农

心理科学进展 , 2003,
Abstract: Positive psychology is a science concerning on positive features such as human virtue and strength that make life worth living. It was proposed by Martin E.P. Seligman and is widely studied in contemporary psychology. Current researches mainly focus on : 1) positive emotions and experiences; 2) positive personality; 3) positive emotions and health; and 4) creativity and talent. In this article, the history, fields, goals, as well as research advances of positive psychology were reviewed. It aimed to serve as a reference for the studies in this area in our country.
Automatic identification and extraction of endmember from hyperspectral imagery by iterative unmixing
高光谱端元自动确定与提取的迭代算法

CAO Jiannong,WANG Beibei,HE Xiaoning,
曹建农
,王贝贝,何晓宁

遥感学报 , 2013,
Abstract: Current algorithms of endmember extraction basically need manually determining the number of endmembers, which is not conducive to automatically process. The paper puts forward iterative algorithm for automatic identification and extraction of endmember. First, we obtain the similarity threshold among pixels by statistical analysis, and determine the criterion of candidate endmembers. Then, the internal and external correlation judgments of candidate endmembers are done, and ill-conditioned matrix to circumvent judgment on endmember spectral set is conducted. Finally, the criterion of candidate endmembers is the end of the iterative conditions. When the hyperspectral image contains no candidate endmembers, the endmember spectral set is got and the numbers of endmembers are determined. Experiments show the effectiveness of this method, by which the error risk of sequential endmember extraction algorithm can be avoided, and the degree of automation is improved.
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