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Search Results: 1 - 10 of 18097 matches for " CUI Long "
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Perspectives on Stability and Mobility of Passenger's Travel Behavior through Smart Card Data
Zhiyong Cui,Ying Long
Computer Science , 2015,
Abstract: Existing studies have extensively used temporal-spatial data to mining the mobility patterns of different kinds of travelers. Smart Card Data (SCD) collected by the Automated Fare Collection (AFC) systems can reflect a general view of the mobility pattern of the whole bus and metro riders in urban area. Since the mobility and stability are temporally and spatially dynamic and therefore difficult to measure, few work focuses on the transition of their travel pattern between a long time interval. In this paper, an overview of the relation between stability and regularity of public transit riders based on SCD of Beijing is presented first. To analyze the temporal travel pattern of urban residents, travelers are classified into two categories, extreme and non-extreme travelers. We have two lines for profiling all cardholders, rule-based approach for extreme and improved density-based clustering method for non-extreme. Similar clusters are aggregated according their features of regularity and occasionality. By combining transition matrix of passenger's temporal travel pattern and socioeconomic data of Beijing in the year of 2010 and 2014, several analyses about resident's temporal mobility and stability are presented to shed lights on the interdependence between stability and mobility in the time dimension. The results indicate that passengers's regularity is hard to predict, extreme travel patterns are more vulnerable and overall non-extreme travel patterns nearly stay the same.
Study on Coal Consumption Curve Fitting of the Thermal Power Based on Genetic Algorithm  [PDF]
Le-Le Cui, Yang-Fan Li, Pan Long
Journal of Power and Energy Engineering (JPEE) , 2015, DOI: 10.4236/jpee.2015.34058
Abstract:

Coal consumption curve of the thermal power plant can reflect the function relationship between the coal consumption of unit and load, which plays a key role for research on unit economic operation and load optimal dispatch. Now get coal consumption curve is generally obtained by least square method, but which are static curve and these curves remain unchanged for a long time, and make them are incompatible with the actual operation situation of the unit. Furthermore, coal consumption has the characteristics of typical nonlinear and time varying, sometimes the least square method does not work for nonlinear complex problems. For these problems, a method of coal consumption curve fitting of the thermal power plant units based on genetic algorithm is proposed. The residual analysis method is used for data detection; quadratic function is employed to the objective function; appropriate parameters such as initial population size, crossover rate and mutation rate are set; the unit’s actual coal consumption curves are fitted, and comparing the proposed method with least squares method, the results indicate that fitting effect of the former is better than the latter, and further indicate that the proposed method to do curve fitting can best approximate known data in a certain significance, and they can real-timely reflect the interdependence between power output and coal consumption.

5-(2-Hydroxyphenyl)-3-methyl-4,5-dihydro-1H-pyrazole-1-carbaldehyde
Ping Cui,Xin-Long Li
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810031600
Abstract: In the title compound, C11H12N2O2, the dihydropyrazole and benzene rings are oriented at a dihedral angle of 68.35 (5)°. The dihydropyrazole ring is planar, with a mean deviation from the mean plane of 0.0409 . The crystal structure is stabilized by O—H...O and C—H...O hydrogen bonds.
Scaling Laws for Overlaid Wireless Networks: A Cognitive Radio Network vs. a Primary Network
Changchuan Yin,Long Gao,Shuguang Cui
Mathematics , 2008,
Abstract: We study the scaling laws for the throughputs and delays of two coexisting wireless networks that operate in the same geographic region. The primary network consists of Poisson distributed legacy users of density n, and the secondary network consists of Poisson distributed cognitive users of density m, with m>n. The primary users have a higher priority to access the spectrum without particular considerations for the secondary users, while the secondary users have to act conservatively in order to limit the interference to the primary users. With a practical assumption that the secondary users only know the locations of the primary transmitters (not the primary receivers), we first show that both networks can achieve the same throughput scaling law as what Gupta and Kumar [1] established for a stand-alone wireless network if proper transmission schemes are deployed, where a certain throughput is achievable for each individual secondary user (i.e., zero outage) with high probability. By using a fluid model, we also show that both networks can achieve the same delay-throughput tradeoff as the optimal one established by El Gamal et al. [2] for a stand-alone wireless network.
Transcriptomic Characterization of Temperature Stress Responses in Larval Zebrafish
Yong Long, Linchun Li, Qing Li, Xiaozhen He, Zongbin Cui
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0037209
Abstract: Temperature influences nearly all biochemical, physiological and life history activities of fish, but the molecular mechanisms underlying the temperature acclimation remains largely unknown. Previous studies have identified many temperature-regulated genes in adult tissues; however, the transcriptional responses of fish larvae to temperature stress are not well understood. In this study, we characterized the transcriptional responses in larval zebrafish exposed to cold or heat stress using microarray analysis. In comparison with genes expressed in the control at 28°C, a total of 2680 genes were found to be affected in 96 hpf larvae exposed to cold (16°C) or heat (34°C) for 2 and 48 h and most of these genes were expressed in a temperature-specific and temporally regulated manner. Bioinformatic analysis identified multiple temperature-regulated biological processes and pathways. Biological processes overrepresented among the earliest genes induced by temperature stress include regulation of transcription, nucleosome assembly, chromatin organization and protein folding. However, processes such as RNA processing, cellular metal ion homeostasis and protein transport and were enriched in genes up-regulated under cold exposure for 48 h. Pathways such as mTOR signalling, p53 signalling and circadian rhythm were enriched among cold-induced genes, while adipocytokine signalling, protein export and arginine and praline metabolism were enriched among heat-induced genes. Although most of these biological processes and pathways were specifically regulated by cold or heat, common responses to both cold and heat stresses were also found. Thus, these findings provide new interesting clues for elucidation of mechanisms underlying the temperature acclimation in fish.
SCFIA: a statistical corresponding feature identification algorithm for LC/MS
Jian Cui, Xuepo Ma, Long Chen, Jianqiu Zhang
BMC Bioinformatics , 2011, DOI: 10.1186/1471-2105-12-439
Abstract: We test SCFIA on publicly available datasets. We first compare its performance with that of warping function based methods, and the results show significant improvements. The performance of SCFIA on replicates datasets and fractionated datasets is also evaluated. In both cases, the accuracy is above 90%, which is near optimal. Finally the coverage of SCFIA is evaluated, and it is shown that SCFIA can find corresponding features in multiple datasets for over 90% peptides identified by Tandem MS.SCFIA can be used for accurate corresponding feature identification in LC-MS. We have shown that peak shape correlation can be used effectively for improving the accuracy. SCFIA provides high coverage in corresponding feature identification in multiple datasets, which serves the basis for integrating multiple LC-MS measurements for accurate peptide quantification.Liquid Chromatography-Mass Spectrometry/Tandem Mass Spectrometry (LC-MS/MS) is a powerful tool for protein identification and quantification [1]. One important task in LC-MS/MS processing is the identification of corresponding features (peaks registered by identical peptides) in multiple datasets, which is critical for the integration of quantification information to reduce measurement variation [2].Before other discussions, we first introduce some definitions that are used throughout the paper. A feature is the two dimensional (retention/elution time - m/z) signal registered by a single charge variant of a peptide. When we consider extracted-ion-chromatograms (XICs), a feature is represented by its LC elution peak in an LC-MS/MS run. If a peptide is picked up by Tandem MS, then its LC elution peak can be located exactly in LC-MS. We refer to such LC peaks as "features with identity". If a peptide is not picked up by Tandem MS, then its elution peak location would be unknown, and its LC peak is called "a feature with unknown identity".If several datasets are collected in an experiment, then each dataset has an associa
Malignant inguinal monophasic synovial sarcoma: report of a case and review of the literature
Ji Xu, Jia Wang, Long Cui, Xiangru Wu
World Journal of Surgical Oncology , 2010, DOI: 10.1186/1477-7819-8-102
Abstract: We report the case of a 68-year-old woman patient who presented an inguinal mass with swelling and pain in the right lower limb. She underwent surgery, and later received systematic intravenous chemotherapy. The pathological studies, especially the specific chromosomal translocation of a t(X;18) (p11.2;q11.2), confirmed the diagnosis as a synovial sarcoma. To the best of our knowledge, this is the first report of a monophasic synovial sarcoma in the inguinal region.Besides making the readership aware of the rarity of location and age of this present case, this report distinctly highlights the great value of a molecular analysis of an SYT associated genetic alteration in the diagnosis of synovial sarcoma occurring at rare sites especially when immunochemical results are equivocal.A synovial sarcoma (SS) is an aggressive soft tissue tumor, which mainly occurs in the para-articular region of extremities with a predilection of lower limb. It usually develops in adolescents and young adults between the age of 15 and 40 years [1-3]. The detection of a reciprocal translocation between chromosomes X and 18 t(X:18) has led to the identification of an SS18 gene(also known as SYT) rearrangement being involved in the formation of a SYT-SSX fusion protein in synovial sarcomas[4-6]. With the advent of immunohistochemistry and molecular techniques, cases of synovial sarcomas have been reported in unusual location including the head and neck[7], mediastinum[8], lung[9], abdominal wall[10], intraabdominal[11], kidney[12] and retroperitoneum[13]. Isolated rare cases were mentioned in the vulva [14], skin [15], blood vessels [16] and nerves [17].Inguinal synovial sarcomas are rare findings with only one case report in the English literature [18]. Here we report a case of an inguinal synovial sarcoma presented with pain and swelling in the right lower limb.A 68-year-old woman was admitted with a complaint of swelling and pain in her right lower limb. She had felt a progressive swelling
Bis(1,10-phenanthroline-κ2N,N′)(sulfato-κ2O,O′)cadmium(II) propane-1,3-diol solvate
Kai-Long Zhong,Jiang-Dong Cui
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810022518
Abstract: In the title compound, [Cd(SO4)(C12H8N2)2]·C3H8O2, the CdII atom has a distorted octahedral coordination composed of four N atoms from two chelating 1,10-phenanthroline ligands and two O atoms from an O,O′-bidentate sulfate group. The two chelating NCCN groups subtend a dihedral angle of 82.21 (9)°. The CdII ion, the S atom and the middle C atom of the propane-1,3-diol solvent molecule are located on special positions, site symmetry 2. The solvate features a pair of O—H...O hydrogen bonds with the uncoordinated O atoms of the sulfate ion. The OH group of the propane-1,3-diol solvent is disordered over two positions of equal occupancy.
Bis(1,10-phenanthroline-κ2N,N′)(sulfato-κ2O,O′)nickel(II) propane-1,3-diol solvate
Chao Ni,Kai-Long Zhong,Jiang-Dong Cui
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810020210
Abstract: In the structure of the title compound, [Ni(SO4)(C12H8N2)2]·C3H8O2, the NiII ion (site symmetry 2) is six-coordinated in a distorted octahedral manner by four N atoms from two chelating 1,10-phenanthroline (phen) ligands and two O atoms from a bidentate sulfate ligand (2 symmetry). The dihedral angle between the two chelating NCCN groups is 80.9 (1)°. The central C atom of the propane-1,3-diol solvent molecule is likewise located on a twofold rotation axis. In the crystal structure, the [Ni(SO4)(C12H8N2)2] and C3H8O2 entities are connected through intermolecular O—H...O hydrogen bonding.
Synthesis of Cubic Chromium Nitride Nanocrystals Powders by Arc Discharge Plasma Method
SHEN Long-Hai,CUI Qi-Liang
无机材料学报 , 2010, DOI: 10.3724/sp.j.1077.2010.00411
Abstract: Cubic CrN nanoparticles with the size less than 10 nm were synthesized through direct reaction of metal Cr with N2 by arc discharge plasma method. The products synthesized under different nitrogen gas pressure were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM) and Fourier transform infrared spectra (FT-IR). The effect of N2 pressure and accession of NH3 on the formation of cubic phase CrN were studied. The results indicate that it is beneficial for the convesion of Cr to CrN under relative low N2 pressure (5~20kPa), namely more N atoms can diffuse into Cr lattice. Moreover, the accession of active nitrogen resource (NH3) weakens the nitridation of Cr.
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