Home / Advanced Search

  • Title/Keywords

  • Author/Affliations

  • Journal

  • Article Type

  • Start Year

  • End Year

Update SearchingClear
  • Articles
  • Online
Search Results (81)
  • Open Access

    ARTICLE

    Development of a Soil Stabilizer for Road Subgrade Based on Original Phosphogypsum

    Zenghuan Gu1, Aiguo Fang2, Sudong Hua1,*, Qingzhou Zhao2, Lidong Sun2, Fan Xia2, Liying Qian3, Xiaojian Ren3

    Journal of Renewable Materials, Vol.9, No.2, pp. 253-268, 2021, DOI:10.32604/jrm.2021.011912 - 15 December 2020

    Abstract The research used industrial by-products original phosphogypsum (PG) as the main raw material, slag (SG) and Portland cement (PC) as auxiliary materials, and the optimal additive amount was determined according to the compressive strength value of the sample. Comprehensively evaluate the water resistance and volume stability of the samples, and determine the best formula for new roadbed stabilized materials. The results showed that when the weight ratio of PG, slag and cement was OPG:SG:PC = 6:3:1, and mixed with 5% micro silica fume (MSF) and 3‰ hydroxypropyl methyl cellulose (HPMC), the sample’s comprehensive performance was… More >

  • Open Access

    ARTICLE

    City-Level Homogeneous Blocks Identification for IP Geolocation

    Fuxiang Yuan, Fenlin Liu, Chong Liu, Xiangyang Luo*

    Intelligent Automation & Soft Computing, Vol.26, No.6, pp. 1403-1417, 2020, DOI:10.32604/iasc.2020.011902 - 24 December 2020

    Abstract IPs in homogeneous blocks are tightly connected and close to each other in topology and geography, which can help geolocate sensitive target IPs and maintain network security. Therefore, this manuscript proposes a city-level homogeneous blocks identification algorithm for IP geolocation. Firstly, IPs with consistent geographic location information in multiple databases and some landmarks in a specific area are obtained as targets; the /31 containing each target is used as a candidate block; vantage points are deployed to probe IPs in the candidate blocks to obtain delays and paths, and alias resolution is performed. Then, based on… More >

  • Open Access

    ARTICLE

    Classification and Research of Skin Lesions Based on Machine Learning

    Jian Liu1, Wantao Wang1, Jie Chen2, *, Guozhong Sun3, Alan Yang4

    CMC-Computers, Materials & Continua, Vol.62, No.3, pp. 1187-1200, 2020, DOI:10.32604/cmc.2020.05883

    Abstract Classification of skin lesions is a complex identification challenge. Due to the wide variety of skin lesions, doctors need to spend a lot of time and effort to judge the lesion image which zoomed through the dermatoscopy. The diagnosis which the algorithm of identifying pathological images assists doctors gets more and more attention. With the development of deep learning, the field of image recognition has made longterm progress. The effect of recognizing images through convolutional neural network models is better than traditional image recognition technology. In this work, we try to classify seven kinds of More >

  • Open Access

    ARTICLE

    EFFECT OF CYLINDER DIAMETER ON STATE QUANTITIES FOR IRREVERSIBLE PROCESS IN PISTON-CYLINDER SYSTEM

    Siti Nurul Akmal Yusofa , Yutaka Asakoa,*,Mohammad Faghrib , Lit Ken Tana , Nor Azwadi bin Che Sidika, Wan Mohd Arif bin Aziz Japara

    Frontiers in Heat and Mass Transfer, Vol.13, pp. 1-5, 2019, DOI:10.5098/hmt.13.25

    Abstract A numerical analysis for the effect of a cylinder diameter on the state quantities for the irreversible process in a piston-cylinder system was conducted using the LB1S model. The numerical method is based on the ALE method. The cylinder-diameter range of D=0.01 m to 0.10 m was chosen. The effect of the cylinder-diameter on the state quantities was slight in the single compression with the piston velocity of -10 m/s. The ratio of the average pressure to the pressure of the reversible process at the end of the first cycle ranged from 1.00023 to 1.00462 in More >

  • Open Access

    ABSTRACT

    The Effect of Sinus Diameter on the Opening and Closing Performance of Aortic Valve Under the Expansion of Aortic Root

    Qianwen Hou1, Aike Qiao1,*

    Molecular & Cellular Biomechanics, Vol.16, Suppl.1, pp. 37-37, 2019, DOI:10.32604/mcb.2019.05717

    Abstract In order to explore the effect of aortic sinus diameter on aortic valve opening and closing performance in the case that aortic valve itself has no obvious disease and aortic root expands continuously. In this study, 20 groups of aortic root models with different aortic sinus and root diameters were constructed according to the size of clinical surgical guidance to simulate the possible expansion of aortic root at the later stage of operation. The valve sinus diameter DS were set to 32 mm, 36 mm, 40 mm and 44 mm, the aortic root diameter DA… More >

  • Open Access

    ARTICLE

    Reversible Data Hiding Based on Pixel-Value-Ordering and Pixel Block Merging Strategy

    Wengui Su1,2, Xiang Wang3,*, Yulong Shen1

    CMC-Computers, Materials & Continua, Vol.59, No.3, pp. 925-941, 2019, DOI:10.32604/cmc.2019.04842

    Abstract With the reversible data hiding method based on pixel-value-ordering, data are embedded through the modification of the maximum and minimum values of a block. A significant relationship exists between the embedding performance and the block size. Traditional pixel-value-ordering methods utilize pixel blocks with a fixed size to embed data; the smaller the pixel blocks, greater is the embedding capacity. However, it tends to result in the deterioration of the quality of the marked image. Herein, a novel reversible data hiding method is proposed by incorporating a block merging strategy into Li et al.’s pixel-value-ordering method,… More >

  • Open Access

    ARTICLE

    SORET AND RADIATION EFFECTS ON AN UNSTEADY FLOW OF A CASSON FLUID THROUGH POROUS VERTICAL CHANNEL WITH EXPANSION AND CONTRACTION

    N. Vijayaa,*, Y. Hari Krishnaa , K. Kalyanib, G.V.R. Reddya

    Frontiers in Heat and Mass Transfer, Vol.11, pp. 1-11, 2018, DOI:10.5098/hmt.11.19

    Abstract The present paper deals with the thermo physical properties of a Casson fluid through an oscillating vertical wall embedded through porous medium under the influence transverse magnetic field, radiation, constant heat source and first order chemical reaction. The radiative heat loss is modelled by using Rosseland approximation. Similarity variables were used to convert the partial differential equations into ordinary differential equation. The transformed ordinary differential equations are solved numerically using Runge - Kutta -Fehlberg method with shooting technique. In order to get perfect perception of the flow pattern we obtain the graphs of axial velocity, More >

  • Open Access

    ARTICLE

    Insurance access in adults with congenital heart disease in the Affordable Care Act era

    Chien-Jung Lin1, Eric Novak1, Michael W. Rich1, Joseph J. Billadello1,2

    Congenital Heart Disease, Vol.13, No.3, pp. 384-391, 2018, DOI:10.1111/chd.12582

    Abstract Background: Adults with congenital heart disease (ACHD) have traditionally been viewed as an underinsured population. Whether this is true in the Affordable Care Act era is unknown. We determined insurance patterns in ACHD patients compared to the non-ACHD cardiology population in a contemporary cohort.
    Methods: All cardiology outpatient visits between July 2016 and February 2017 to a large referral center in the United States were reviewed. The primary payer was categorized as health maintenance organization (HMO), preferred provider organization (PPO), Medicare, Medicaid, self-pay, or other. Diagnosis and lesion severity of ACHD were extracted from ICD-10 diagnostic codes… More >

  • Open Access

    ARTICLE

    Potential spatial expansion of Ulmus macrocarpa population in Keerqin sandy lands, China

    Jianar A, JH Yuan, YF Yang

    Phyton-International Journal of Experimental Botany, Vol.87, pp. 32-39, 2018, DOI:10.32604/phyton.2018.87.032

    Abstract Ulmus macrocarpa Hance can form monodominant woodlands in the semiarid Keerqin sandy lands, China. Methods of sampling at meter intervals from the bases of trees at the woodland edges and isolated trees, respectively, were employed along vertical sections in different directions. Using statistical methods based on the density function of the Weibull distribution, the patterns of seed dispersal and the spatial expansion response of U. macrocarpa, which is a typical anemochorous plant, were analyzed. Although as an effect of the wind direction varying owing to the monsoon, there were differences in the degree of dispersal of seeds… More >

  • Open Access

    ARTICLE

    Extrapolation Method for Cauchy Principal Value Integral with Classical Rectangle Rule on Interval

    Maohui Xia1, Jin Li*,2

    CMES-Computer Modeling in Engineering & Sciences, Vol.115, No.3, pp. 313-326, 2018, DOI:10.3970/cmes.2018.08053

    Abstract In this paper, the classical composite middle rectangle rule for the computation of Cauchy principal value integral (the singular kernel 1/(x-s)) is discussed. With the density function approximated only while the singular kernel is calculated analysis, then the error functional of asymptotic expansion is obtained. We construct a series to approach the singular point. An extrapolation algorithm is presented and the convergence rate of extrapolation algorithm is proved. At last, some numerical results are presented to confirm the theoretical results and show the efficiency of the algorithms. More >

Displaying 41-50 on page 5 of 81. Per Page