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Search Results: 1 - 10 of 28743 matches for " NA Hui "
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A novel method to reconstruct phylogeny tree based on thechaos game representation  [PDF]
Na-Na Li, Feng Shi, Xiao-Hui Niu, Jing-Bo Xia
Journal of Biomedical Science and Engineering (JBiSE) , 2009, DOI: 10.4236/jbise.2009.28084
Abstract: We developed a new approach for the reconstruction of phylogeny trees based on the chaos game representation (CGR) of biological sequences. The chaos game representation (CGR) method generates a picture from a biological sequence, which displays both local and global patterns. The quantitative index of the biological sequence is extracted from the picture. The Kullback-Leibler discrimination information is used as a diversity indicator to measure the dissimilarity of each pair of biological sequences. The new method is inspected by two data sets: the Eutherian orders using concatenated H-stranded amino acid sequences and the genome sequence of the SARS and coronavirus. The phylogeny trees constructed by the new method are consistent with the commonly accepted ones. These results are very promising and suggest more efforts for further developments.
Does a Creative Learning Medium Matter? Impact of Low Cost Android Tablets on Elementary Students’ English Comprehension, Perceived Performance and Memory Retention  [PDF]
Ibrahim El-Mouelhy, Issac Hin Chun Poon, Anna Na Na Hui, Christina Sue-Chan
Creative Education (CE) , 2013, DOI: 10.4236/ce.2013.412A2007
Abstract: Introduction: Android tablet is a relatively newer and cheaper portal electronic device that can be used as a creative learning tool in elementary school setting compared with laptop. However, the effect of Android tablet on students’ learning performance has been rarely studied. Before encouraging schools to implant Android tablet in teaching process, it should be ensured that tablet should at least do no harm on students’ academic performance. This research aims to investigate the impact of an innovative medium—a low cost Android tablet versus paper—on elementary students’ reading comprehension, perceived comprehension performance, and memory retention, and discuss about the implication of the finding and future directions. Method: In Study 1, 18 fourth-graders and 36 sixth-graders read 2 grade-appropriate passages on either a tablet or paper and completed related comprehension tests, then assessed their perceived performance. In Study 2, 16 first-graders attempted to memorize 25 pictures displayed on tablets while another 12 first-graders attempted to memorize 25 pictures displayed on paper. After 1 minute filler activity, participants were shown 50 pictures and asked to identify those they had attempted to memorize. Results: In Study 1, results showed that fourth-graders comprehended better when reading on paper, whereas sixth-graders scored similarly on both media. An interaction effect between “medium” and “gender” was found in the perceived performance of fourth-graders, with boys reporting higher perceived performance when using tablets. In Study 2, first-graders experienced better memory retention when they viewed pictures on paper. Conclusion: The introduction of Android tablets in the classroom did not have a significant negative impact on sixth-graders’ reading comprehension. However, some caution is required when introducing tablets to first-graders and fourth-graders because of the negative effect found in this study. It should also be noted that the use of tablets may enhance the confidence of grade 4 boys during comprehension tasks, but the confidence of grade 4 girls engaged in the same activities may be deteriorated.
Effects of a Care Workshop on Caring Behaviors as Measured by Patients and Patient Satisfaction  [PDF]
Hui-Shan Chan, Hui-Ying Chu, Hsiang Yen, Li-Na Chou
Open Journal of Nursing (OJN) , 2015, DOI: 10.4236/ojn.2015.52010
Abstract: Caring is a central focus of nursing, and patient satisfaction is a critical indicator of nursing care quality. The aim of this study was to determine the effects that a care workshop exerted on nurse caring behaviors as perceived by patients and reflected by patient satisfaction. A quasi-experimental, pretest-posttest design without a control group was applied. The intervention consisted of several facets: 1) formal educational sessions twice a week for six weeks, 2) an angel-master mentorship activity, and 3) posts of exemplary caring behavior and stories. A demographic questionnaire, the Modified Nurse Caring Behaviors Inventory, and the Hartford Hospital Satisfaction Survey were used in this study. Descriptive statistics were analyzed to evaluate participant demographic characteristics. Paired t tests were used to determine the effects of a care workshop on nurse caring behaviors as perceived by patients and reflected by patient satisfaction. Of the 236 patients enrolled, 49.6% were women and 57.2% were admitted to medical-surgical units. Female patients rated nurse caring behaviors higher and reported greater patient satisfaction than did male patients on the pretest (p < 0.05) and 6-week posttest (p < 0.01). Patient with medical-surgical admissions rated nurse caring behaviors higher and reported greater patient satisfaction than patients with emergency admissions did on the pretest and 6-week posttest (p < 0.01). Nurse caring behaviors and patient satisfaction were positively correlated on the pretest (p < 0.05) and 6-week posttest (p < 0.01). Patient satisfaction scores increased after the intervention compared with the pretest scores (p = 0.000). Caring educational programs for nurses are commonly regarded to be an essential strategy for promoting care knowledge and practice and improving patient satisfaction. According to the favorable results of this study, care workshops must be provides to nurses in other units or hospitals in future studies.
A Novel Hybrid Evaluation Model for the Performance of ERP Project Based on ANP and Improved Matter-Element Extension Model
Zhao Hui-ru,Li Na-na
Mathematical Problems in Engineering , 2013, DOI: 10.1155/2013/913212
Quantal Glutamate Release Is Essential for Reliable Neuronal Encodings in Cerebral Networks
Jiandong Yu, Hao Qian, Na Chen, Jin-Hui Wang
PLOS ONE , 2011, DOI: 10.1371/journal.pone.0025219
Abstract: Background The neurons and synapses work coordinately to program the brain codes of controlling cognition and behaviors. Spike patterns at the presynaptic neurons regulate synaptic transmission. The quantitative regulations of synapse dynamics in spike encoding at the postsynaptic neurons remain unclear. Methodology/Principal Findings With dual whole-cell recordings at synapse-paired cells in mouse cortical slices, we have investigated the regulation of synapse dynamics to neuronal spike encoding at cerebral circuits assembled by pyramidal neurons and GABAergic ones. Our studies at unitary synapses show that postsynaptic responses are constant over time, such as glutamate receptor-channel currents at GABAergic neurons and glutamate transport currents at astrocytes, indicating quantal glutamate release. In terms of its physiological impact, our results demonstrate that the signals integrated from quantal glutamatergic synapses drive spike encoding at GABAergic neurons reliably, which in turn precisely set spike encoding at pyramidal neurons through feedback inhibition. Conclusion/Significance Our studies provide the evidences for the quantal glutamate release to drive the spike encodings precisely in cortical circuits, which may be essential for programming the reliable codes in the brain to manage well-organized behaviors.
Redetermination of Fe2[BP3O12]
Fei Fei Li,Hui Ju Zhang,Li Na Zhang
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810029818
Abstract: Explorations of phases in the quaternary FeIII–BIII–PV–O system prepared by the high temperature solution growth (HTSG) method led to single-crystal growth of anhydrous diiron(III) borotriphosphate, Fe2[BP3O12]. This phase has been synthesized previously as a microcrystalline material and its structure refined in space group P3 from powder X-ray diffraction data using the Rietveld method [Chen et al. (2004). J. Inorg. Mater. 19, 429-432]. In the current single-crystal study, it was shown that the correct space group is P63/m. The three-dimensional structure of the title compound is built up from FeO6 octahedra (3.. symmetry), trigonal–planar BO3 groups (overline{6} symmetry) and PO4 tetrahedra (m.. symmetry). Two FeO6 octahedra form Fe2O9 dimers via face-sharing, while the anionic BO3 and PO4 groups are connected via corner-sharing to build up the [BP3O12]6 anion. Both units are interconnected via corner-sharing.
Inhibitory effect of the combination therapy of simvastatin and pinocembrin on atherosclerosis in apoE-deficient mice
Sang Hui,Yuan Na,Yao Shutong,Li Furong
Lipids in Health and Disease , 2012, DOI: 10.1186/1476-511x-11-166
Abstract: The present study was performed to investigate the effects of the combination therapy of pinocembrin and simvastatin on the atherosclerotic lesions development in the ApoE / mice. Methods Eight-week-old male ApoE / mice were fed high fat diet (HFD) and treated with simvastatin (10 mg/kg per day), pinocembrin (20 mg/kg per day), or the combination therapy (simvastatin 5 mg/kg per day and pinocembrin 20 mg/kg per day) for 14 weeks. The serum lipid levels, nitric oxide (NO), endothelin (ET), superoxide dismutase (SOD) and malondialdehyde (MDA) were determined with spectrophotometric measurement and ELISA assay. Vascular endothelial growth factor (VEGF) in serum and aortic root was detected. En face analyses of atherosclerotic lesion in whole aorta and aortic root sections were performed with plaque staining using oil red O. Results The combination treatment with simvastatin and pinocembrin resulted in significantly decreased levels of serum total cholesterol, triglycerides and low-density lipoprotein cholesterol, augmented NO levels and SOD activity, inhibited ET and VEGF expression. Immunohistochemistry of aortic valve sections revealed that the combination therapy also suppressed the expression of VEGF induced by HFD. In addition, HFD-induced arterial wall lipid disposition displayed by oil red O staining was reduced significantly in aortic root and whole aorta en face in the combination administrated mice. The effect of the combination was superior to simvastatin alone. Conclusion The combination of simvastatin and pinocembrin synergistically inhibited atherosclerotic lesion development in ApoE / mice with hyperlipidemia, which is partially dependent on the protective of vascular endothelium.
Application of stratified emulsion splitting technology in highly hard nuclear cataract surgery
Hui Na,Da-Guang Bi,Yong Wang
Guoji Yanke Zazhi , 2013, DOI: 10.3980/j.issn.1672-5123.2013.04.22
Abstract: AIM:To explore safety and effectiveness of stratified emulsion splitting technology in highly hard nuclear cataract ultrasonic emulsification. METHODS: Totally 43 cases(47 eyes)of highly hard nuclear cataract was performed cataract extraction combined IOL implantation with stratified emulsion splitting cataract ultrasonic emulsification technology. RESULTS:Postoperative visual acuity 1 day, 1 week and 1 month best-corrected visual acuity ≥0.5 was accounted for 70.21%, 87.23% and 89.36%. Intraoperative capsule rupture was found in 2 eyes. Corneal mild edema was found in 7 eyes(14.89%)after the first l day post-operation. CONCLUSION:Stratified emulsion splitting technique has a practical application with little tissue damage, low capsular rupture rate and few complications for highly hard nuclear cataract patients and can bring a desirable outcome.
Simulation of Unsteady Water Film Flow on Pelton Bucket  [PDF]
Shen Na
Energy and Power Engineering (EPE) , 2013, DOI: 10.4236/epe.2013.54B010
Abstract: In order to simulate the complicated unsteady flow in Pelton bucket, it is necessary to apply the animated cartoon approach. In this paper, a free jet and the inner surface of a bucket is described by boundary fitted grid (BFG) with non-orthogonal curvilinear coordinates. The water flow is discretized in space and time for CFD (computational fluid dynamics). The moving grids of water film are successfully projected onto the bucket’s inner surface by a projection algorithm. The visualization result of the jet landing on bucket’s surface and the unsteady flow in the rotating buckets in 3D verifies the effectiveness of the proposed method.
China’s Forensic System: Critical Comments on the “Latest” Flaw  [PDF]
Jiang Na
Chinese Studies (ChnStd) , 2014, DOI: 10.4236/chnstd.2014.33013
Abstract: The article will critically examine the fundamental flaws that have been newly discovered from the “latest” case studies. In recent decades, numerous miscarriages of justice have occurred in China mainly due to the insufficient or improper use of forensic evidence. Comments on the “latest” flaw will start from an overview of the notorious wrongful conviction in Case ZHANG Gaoping and ZHANG Hui whose exonerations in 2013 were based on the proper use of forensic techniques such as DNA testing. The case highlights the injustice that results when forensic evidence is ignored in favour of wrongful confessions extorted under police torture. It has been suggested that China’s several waves of forensic science reform cannot lead the current forensic identification to objective, fair or reliable forensic evidence. The “latest” founded flaw entrenched in its forensic system failed to be solved by technical, financial, administrative or legal progress only. In essence, the 2005 reform on forensic identification is flawed to its core, albeit being recently identified. This is primarily because in law forensic experts inside police can conduct identification to provide forensic evidence on cases investigated by police, which cannot ensure necessary check or balance to prevent or reduce forensic errors in practice.
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