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result(s) for
"Liu, De-Wei"
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Choreography cGAN: generating dances with music beats using conditional generative adversarial networks
by
Liu, Wei-De
,
Huang, Yin-Fu
in
Artificial Intelligence
,
Choreography
,
Computational Biology/Bioinformatics
2021
In recent years, automatic music-driven choreography has become a highly challenging problem to be solved. In this paper, we propose a music-driven choreography system based on conditional generative adversarial networks. First, a dataset MF-DS integrating MFCC features and Dancing Skeletons extracted from Japanese dancing videos is built by ourselves for the study. The MFCC features are extracted based on music beats, and the dancing skeletons are detected based on the image frames of a video. In the training, we use a generative adversarial network to train the music-driven choreography system. The generator integrates residual blocks into fractionally stridden convolution, and the discriminator involves conventional CNNs. Two indicators called beat loss values and choreography diversity values are proposed to evaluate three learning models in the experiments. Finally, we validate that the three models with the best epochs have the near-zero loss for the generator and discriminator, thereby generating stable skeletons and presenting choreography diversity.
Journal Article
Co-Circulation of Multiple Hemorrhagic Fever Diseases with Distinct Clinical Characteristics in Dandong, China
2014
Hemorrhagic fevers (HF) caused by viruses and bacteria are a major public health problem in China and characterized by variable clinical manifestations, such that it is often difficult to achieve accurate diagnosis and treatment. The causes of HF in 85 patients admitted to Dandong hospital, China, between 2011-2012 were determined by serological and PCR tests. Of these, 34 patients were diagnosed with Huaiyangshan hemorrhagic fever (HYSHF), 34 with Hemorrhagic Fever with Renal Syndrome (HFRS), one with murine typhus, and one with scrub typhus. Etiologic agents could not be determined in the 15 remaining patients. Phylogenetic analyses of recovered bacterial and viral sequences revealed that the causative infectious agents were closely related to those described in other geographical regions. As these diseases have no distinctive clinical features in their early stage, only 13 patients were initially accurately diagnosed. The distinctive clinical features of HFRS and HYSHF developed during disease progression. Enlarged lymph nodes, cough, sputum, and diarrhea were more common in HYSHF patients, while more HFRS cases presented with headache, sore throat, oliguria, percussion pain kidney area, and petechiae. Additionally, HYSHF patients displayed significantly lower levels of white blood cells (WBC), higher levels of creations kinase (CK) and alanine aminotransferase (ALT), while HFRS patients presented with an elevation of blood urea nitrogen (BUN) and creatinine (CREA). These clinical features will assist in the accurate diagnosis of both HYSHF and HFRS. Overall, our data reveal the complexity of pathogens causing HFs in a single Chinese hospital, and highlight the need for accurate early diagnosis and a better understanding of their distinctive clinical features.
Journal Article
Effect of Annealing Process on the Photoelectric Properties and Microstructure of Sulfur-Hyperdoped Silicon
2017
The material of sulfur-hyperdoped silicon was prepared by ion implantation and then annealed by heat treating furnace and pulse laser respectively. The effects of annealing process on the absorption, raman shift, carrier concentration and mobility ratio of this material were researched. Furthermore, the doppler broadening spectrum of crystal silicon substrate and sulfur-hyperdoped silicon before and after annealing was presented by using a slow positron technique. And the relationship between the microstructure and photoelectric properties of the material was explored. The experimental results indicate that the absorption and carrier concentration of the sulfur-hyperdoped silicon annealed by pulse laser were higher than that of the samples annealed by heat treating furnace. And the doppler broadening spectrum shows that the photoelectric properties of this material were closely related to the defects in the material.
Journal Article
Transient Operation Risk Assessment of Power System with Wind Farm Integration Based on Dynamic Security Region
by
Zhu, Wen Feng
,
Qin, Chao
,
Li, Xiao Fei
in
Computational efficiency
,
Dynamic tests
,
Dynamical systems
2015
With continuous expansion of the grid, the power system structure is becoming more complicated, leading to more and more uncertainty of the system. Especially, the massive integration of wind power and other renewable energy to the grid brings more challenges. In this paper, by taking use of DSR (dynamic security region) and risk assessment theory, it proposed the transient risk index calculation and integrated analysis method for wind power integration system, which was able to give quantitative indicators of the system day-ahead scheduling plan. The efficiency and practicality of theories mentioned herein were verified by standard numerical examples.
Journal Article
Value of Kidney Disease Improving Global Outcomes Urine Output Criteria in Critically III Patients: A Secondary Analysis of a Multicenter Prospective Cohort Study
by
Jun-Ping Qin Xiang-You Yu Chuan-Yun Qian Shu-Sheng Li Tie-He Qin Er-Zhen Chen Jian-Dong Lin Yu-Hang Ai Da-Wei Wu De-Xin Liu Ren-Hua Sun Zhen-Jie Hu Xiang-Yuan Cao Fa-Chun Zhou Zhen-Yang He Li-Hua Zhou You-Zhong An Yan Kang Xiao-Chun Ma Ming-Yan Zhao Li Jiang Yuan Xu Bin Du
in
Logistic回归分析
,
分类标准
,
肾脏疾病
2016
Background: Urine output (UO) is an essential criterion of the Kidney Disease Improving Global Outcomes (KD1GO) definition and classification system tbr acute kidney injury (AKI), of which the diagnostic value has not been extensively studied. We aimed to determine whether AKI based on KDIGO UO criteria (KDtGOLro) could improve the diagnostic and prognostic accuracy, compared with KDIGO serum creatinine criteria (KDIGOscr).Methods: We conducted a secondary analysis of the database of a previous study conducted by China Critical Care Clinical Trial Group (CCCCTG), which was a 2-month prospective cohort study (July 1,2009 to August 31,2009) involving 3063 patients in 22 tertiary Intensive Care Units in Mainland of China. AKI was diagnosed and classified separately based on KDIGOt,o and KDlGOsc,. Hospital mortality of patients with more severe AKI classification based on KDIGOvo was compared with other patients by univariate and multivariate regression analyses. Results: The prevalence of AKl increased from 52.4% based on KDIGOscr to 55.4% based on KD1GOsc~ combined with KDIGOuo. KDIGOv~~ also restllted in an upgrade of AKI classification in 7.3% of patients, representing those with more severe AK1 classification based on KDIGOvo. Compared with non-AKI patients or those with maximum AKI classification by KDIGOscr, those with maximum AKI classification by KDIGOuo had a significantly higher hospital mortality of 58.4% (odds ratio [OR]: 7.580, 95% confidence interval [CI]: 4.141-13.873, P 〈 0.001). In a multivariate logistic regression analysis, AKI based on KDIGOuo (OR: 2.891, 95% CI: 1.964-4.254, P 〈 0.001), but not based on KDIGOscr (OR: 1.322, 95% CI: 0.902-1.939, P = 0.152), was an independent risk factor for hospital mortality. Conclusion: UO was a criterion with additional value beyond creatinine criterion for AKI diagnosis and classification, which can help identify a group of patients with high risk of death.
Journal Article
A method for recovery of iron, titanium, and vanadium from vanadium-bearing titanomagnetite
by
Yi-min Zhang;Li-na Wang;De-sheng Chen;Wei-jing Wang;Ya-hui Liu;Hong-xin Zhao;Tao Qi
in
Anthracite
,
Ceramics
,
Characterization and Evaluation of Materials
2018
An innovative method for recovering valuable elements from vanadium-bearing titanomagnetite is proposed. This method involves two procedures: low-temperature roasting of vanadium-bearing titanomagnetite and water leaching of roasting slag. During the roasting process, the reduction of iron oxides to metallic iron, the sodium oxidation of vanadium oxides to water-soluble sodium vanadate, and the smelting separation of metallic iron and slag were accomplished simultaneously. Optimal roasting conditions for iron/slag separation were achieved with a mixture thickness of 42.5 mm, a roasting temperature of 1200°C, a residence time of 2 h, a molar ratio of C/O of 1.7, and a sodium carbonate addition of 70 wt%, as well as with the use of anthracite as a reductant. Under the optimal conditions, 93.67% iron from the raw ore was recovered in the form of iron nugget with 95.44% iron grade. After a water leaching process, 85.61% of the vanadium from the roasting slag was leached, confirming the sodium oxidation of most of the vanadium oxides to water-soluble sodium vanadate during the roasting process. The total recoveries of iron, vanadium, and titanium were 93.67%, 72.68%, and 99.72%, respectively.
Journal Article
Simulation Experimental Study on Hydrodynamics Process of Erosion and Sediment by Runoff in Grassland
[Objective]The aim was to study the simulation test of hydrodynamics process of erosion.[Method]Through the runoff scouring experiment,the property of soil erosion in Damaoqi grassland in Inner Mongolia was studied.The process and mechanism of soil erosion were studied.[Result]The results of runoff scouring experiment on inner Damaoqi steppe showed that the mean flow velocity of change slope increased with the discharge of flow and slope gradient.The mean silt content rate,the mean sediment transport rate and the mean sheer stress all increased when the discharge of flow increased,which changed in parabolic form with the increase of slope gradient and the critical gradient is 25°.The relationship between the mean sediment transport rate and the mean sheer stress was linear.[Conclusion]The study provided theoretic basis for the report of soil erosion in grassland in China.
Journal Article
Modification of Inclusions in Liquid Iron by Mg Treatment
by
Tong-sheng ZHANG De-yong WANG Chun-wei LIU Mao-fa JIANG Ming L Bo WANG Si-xun ZHANG
in
deoxidation
,
desulfuration
,
inclusion
2014
Effect of Mg addition on the compositions of inclusions were studied. The results show that Mg can minimize the inclusions of steel obviously. Under the present condition, Mg deoxidation products of low-S content experimental steel would be changed in the order of Al2O3→MgAl2O4→Mg–Al–O–S→Mg–O–S. Mg deoxidation products of high-S content experimental steel generate Mg–S(–O)+MnS type inclusions, except for usual oxysulfide. And it is consistent with the results of thermodynamics calculation. Mg is preferred to react with oxide, compared with sulfide. The reaction reaches the equilibrium after 1 min or 5 min. It shows that the number and diameter of inclusions in all experimental steel samples are well under control, helping to improve the properties of steel.
Journal Article
The long non-coding RNA HOTAIR indicates a poor prognosis and promotes metastasis in non-small cell lung cancer
2013
Background
The identification of cancer-associated long non-coding RNAs and the investigation of their molecular and biological functions are important for understanding the molecular biology and progression of cancer. HOTAIR (
HOX transcript antisense intergenic RNA
) has been implicated in several cancers; however, its role in non-small cell lung cancer (NSCLC) is unknown. The aim of the present study was to examine the expression pattern of HOTAIR in NSCLC and to evaluate its biological role and clinical significance in tumor progression.
Methods
Expression of HOTAIR was analyzed in 42 NSCLC tissues and four NSCLC cell lines by quantitative reverse-transcription polymerase chain reaction (qRT-PCR). Over-expression and RNA interference (RNAi) approaches were used to investigate the biological functions of HOTAIR. The effect of HOTAIR on proliferation was evaluated by MTT and colony formation assays, and cell migration and invasion were evaluated by transwell assays. Tail vein injection of cells was used to study metastasis in nude mice. Protein levels of HOTAIR targets were determined by western blot analysis. Differences between groups were tested for significance using Student’s t-test (two-tailed).
Results
HOTAIR was highly expressed both in NSCLC samples and cell lines compared with corresponding normal counterparts. HOTAIR upregulation was correlated with NSCLC advanced pathological stage and lymph-node metastasis. Moreover, patients with high levels of HOTAIR expression had a relatively poor prognosis. Inhibition of HOTAIR by RNAi decreased the migration and invasion of NSCLC cells
in vitro
and impeded cell metastasis
in vivo
. HOXA5 levels were affected by HOTAIR knockdown or over-expression
in vitro
.
Conclusions
Our findings indicate that HOTAIR is significantly up-regulated in NSCLC tissues, and regulates NSCLC cell invasion and metastasis, partially via the down-regulation of HOXA5. Thus, HOTAIR may represent a new marker of poor prognosis and is a potential therapeutic target for NSCLC intervention.
Journal Article
MicroRNA-196a promotes non-small cell lung cancer cell proliferation and invasion through targeting HOXA5
2012
Background
MicroRNAs (miRNAs) are short, non-coding RNAs (~22 nt) that play important roles in the pathogenesis of human diseases by negatively regulating gene expression. Although miR-196a has been implicated in several other cancers, its role in non-small cell lung cancer (NSCLC) is unknown. The aim of the present study was to examine the expression pattern of miR-196a in NSCLC and its clinical significance, as well as its biological role in tumor progression.
Methods
Expression of miR-196a was analyzed in 34 NSCLC tissues and five NSCLC cell lines by quantitative reverse-transcription polymerase chain reaction (qRT-PCR). The effect of DNA methylation on miR-196a expression was investigated by 5-aza-2-deoxy-cytidine treatment and bisulfite sequencing. The effect of miR-196a on proliferation was evaluated by MTT and colony formation assays, and cell migration and invasion were evaluated by transwell assays. Analysis of target protein expression was determined by western blotting. Luciferase reporter plasmids were constructed to confirm the action of miR-196a on downstream target genes, including
HOXA5
. Differences between the results were tested for significance using Student’s t-test (two-tailed).
Results
miR-196a was highly expressed both in NSCLC samples and cell lines compared with their corresponding normal counterparts, and the expression of miR-196a may be affected by DNA demethylation. Higher expression of miR-196a in NSCLC tissues was associated with a higher clinical stage, and also correlated with NSCLC lymph-node metastasis.
In vitro
functional assays demonstrated that modulation of miR-196a expression affected NSCLC cell proliferation, migration and invasion. Our analysis showed that miR-196a suppressed the expression of HOXA5 both at the mRNA and protein levels, and luciferase assays confirmed that miR-196a directly bound to the 3’untranslated region of HOXA5. Knockdown of HOXA5 expression in A549 cells using RNAi was shown to promote NSCLC cell proliferation, migration and invasion. Finally, we observed an inverse correlation between HOXA5 and miR-196a expression in NSCLC tissues.
Conclusions
Our findings indicate that miR-196a is significantly up-regulated in NSCLC tissues, and regulates NSCLC cell proliferation, migration and invasion, partially via the down-regulation of HOXA5. Thus, miR-196a may represent a potential therapeutic target for NSCLC intervention.
Journal Article