Showing 581 - 600 results of 7,093 for search '"\"((\\"linear structure\\") OR (\\"linear ((structured\" OR structures\") OR structural\")))\""', query time: 0.26s Refine Results
  1. 581

    Predicting the Flexural Modulus of Variable Pitch Angle, Porous Bouligand Structured 3D Printed Polymer by Praveenkumar S. Patil, Edward D. McCarthy, Parvez Alam

    Published 2025-01-01
    “…Our model is expressed as <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>E</mi><mi>f</mi></msub><mo>=</mo><msub><mi>E</mi><mrow><mi>p</mi><mi>o</mi><mi>r</mi><mi>o</mi></mrow></msub><mrow><mo>(</mo><mi>a</mi><msubsup><mi>θ</mi><mi>f</mi><mn>3</mn></msubsup><mo>+</mo><mi>b</mi><msubsup><mi>θ</mi><mi>f</mi><mn>2</mn></msubsup><mo>+</mo><mi>c</mi><msub><mi>θ</mi><mi>f</mi></msub><mo>+</mo><mi>d</mi><mo>)</mo></mrow></mrow></semantics></math></inline-formula>, and we derive this by applying non-linear regression to our experimental data. This model predicts the flexural modulus, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>E</mi><mi>f</mi></msub></semantics></math></inline-formula>, of porous Bouligand structured polymer as a function of both porosity and pitch angle. …”
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  2. 582

    The RACOON viral pneumonia score for structured reporting of pre-existing, acute, and post-pneumonic findings on chest CT by Thorsten Persigehl, Philipp Fervers, Andreas Bucher, Peter Isfort, Peter Isfort, David Maintz, Tobias Penzkofer, Marwin Sähn, Thomas Vogl, Jonathan Kottlors, Felix Doellinger

    Published 2025-07-01
    “…The longitudinal distribution of subscores allowed for differentiation between acute pneumonia and post-pneumonic sequelae.ConclusionThis study presents the RVPS as a comprehensive tool for inter-reader reliable evaluation, longitudinal monitoring, and structured documentation of the extent as well as quality of chest CT findings in infectious lung disease.…”
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  3. 583

    Smart Structural Monitoring: Real-Time Bridge Response Using Digital Twins and Inverse Analysis by Sanduni Jayasinghe, Zhiyan Sun, Amir Sidiq, Mojtaba Mahmoodian, Farham Shahrivar, Sujeeva Setunge

    Published 2025-06-01
    “…Three main loading scenarios were tested, and observations highlighted that the digital twin model emulated the actual structural behavior with a high accuracy. Also, the magnitude and the location of the applied loads on the real structure were correctly identified and a linear elastic behavior was identified in the digital model as expected from the actual structure. …”
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  4. 584

    Nonlinear Finite Analysis of Structural Behavior of Brick Masonry-Infilled Reinforced Concrete Frames by Mahmud Kori Effendi, Astriana Hardawati, Siti Aliyyah Masjuki

    Published 2025-04-01
    “… Earthquake disasters are one source of disaster that often causes buildings to experience total collapse or partial damage so that the structure may no longer be usable. Brick masonry wall construction, both unreinforced and reinforced masonry walls, is starting to be widely used in the world. …”
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  5. 585

    Developing New Design Procedure for Bridge Construction Equipment Based on Advanced Structural Analysis by Shaoxiong Jiang, Faham Tahmasebinia

    Published 2025-03-01
    “…The project adopts parametric design techniques using Rhinoceros (Rhino) 3D and Grasshopper to create a three-dimensional linear model. This model undergoes initial structural optimisation with Karamba3D. …”
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  6. 586

    Study on the Microscopic Pore Characteristics and Mechanisms of Disturbance Damage in Zhanjiang Formation Structural Clay by Yanhua Xie, Bin Tang, Shuaiyu Liu, Jicheng Xu, Binghui Zhang

    Published 2024-11-01
    “…Based on the evolution characteristics of the microstructure, the microscopic pore characteristics of the disturbance damage of Zhanjiang Formation structural clay were examined. The results indicate the following. (1) The porosity in three-dimensional visualization images of the microstructure reconstructed by ArcGIS 10.1 increases with the disturbance degree, showing a linear growth trend. (2) The correlation analysis between macroscopic mechanics and microscopic pores shows that the unconfined compressive strength of Zhanjiang Formation structural clay is mainly affected by its porosity, with a significant linear negative correlation. …”
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  7. 587

    Using Dichotomous Variables to Model Structural Changes in Time Series: An Application to International Trade by Gerardo Covarrubias, Xuedong Liu

    Published 2024-07-01
    “…These variables served a dual purpose: firstly, they denoted an attribute designed to discern structural changes within a linear relationship, and secondly, they quantified the impact and statistical significance of one or more quantitative independent variables on a dependent variable in the presence of such structural changes. …”
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  8. 588

    Method for solving quantifier linear equations based on the algebra of linear predicate operations by Zoya Dudar, Volodymyr Liashyk

    Published 2025-02-01
    “…The subject involves structured approaches that extend the existing set of mathematical tools for processing complex relationships within databases and computational systems. …”
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  9. 589
  10. 590

    Robust Assignment of Natural Frequencies and Antiresonances in Vibrating Systems through Dynamic Structural Modification by Roberto Caracciolo, Dario Richiedei, Iacopo Tamellin

    Published 2021-01-01
    “…This paper proposes a novel method for the robust partial assignment of natural frequencies and antiresonances, together with the partial assignment of the related eigenvectors, in lightly damped linear vibrating systems. Dynamic structural modification is exploited to assign the eigenvalues, either of the system or of the adjoint system, together with their sensitivity with respect to some parameters of interest. …”
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  11. 591

    LONG-LIVED STRUCTURAL ENSEMBLES OF THE EAST EUROPEAN PLATFORM. ARTICLE 1. THE BASEMENT TECTONICS by S. Y. Kolodyazhny

    Published 2018-04-01
    “…A special role belongs to the non-linear structures: different scaled rotational structures, concentric and spiral shaped shears, the arcuate orocline belts and horizontal protrusions. …”
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  12. 592

    Structural and functional transformations of an intermediate city and the emergence of commercial strips, the case of Tiaret in Algeria by Asmaa Bekkouche, Tayeb Otmane

    Published 2022-11-01
    “…Tiaret, an intermediate city in the interior of Algeria, has undergone both rapid and extensive urban growth since the 1970s, transforming its urban structure. The city maintained this evolution rhythm to recompose on its own since 2000 by densifying. …”
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  13. 593
  14. 594

    The changes of left cardiac structure and function in the patients with non-dialysis chronic kidney disease and influencing factors by CHEN Cai-ming, CHEN Yuan, CHEN Yi, ZHANG Xiao-hong, WAN Jian-xin

    Published 2017-01-01
    “…Objective To analyze the changes of left ventricular structure and function in the patients with non-dialysis chronic kidney disease(ND-CKD)and the influencing factors.Methods The ND-CKD patients were enrolled from Jan.2013 to July 2014 in our hospital.All patients were subjected to echocardiography and the indexes were collected.Also the clinical data were collected.The indexes of left ventricular structure and function among different CKD groups were analyzed,and the correlation between the changes of cardiac structure and function were clinical data were also analyzed.Results 337 ND-CKD patients were enrolled,including 71 patients with CKD1 stage,37 patientswith CKD2 stage,28 patients with CKD3 stage,36 patients with CKD stage 4 and 165 patients with CKD stage 5.In pace with the progression of CKD,the data revealed that body mass index(BMI)and serum calcium were gradually declined(P<0.05),while blood urea nitrogen(BUN),serum creatinine(SCr),serum phosphorus,intact parathyroid hormone(iPTH)and Cystatin C gradually ascended(P<0.05).New bone metabolic markers revealed that in pace with the progression of CKD,25-(OH)-VitD gradually declined(P<0.05),but N-Osteocalcin(NOC),β-C-terminal telopeptide of typeⅠcollagen(β-CTX)and N-terminal peptide of typeⅠprocollagen(P1 NP)gradually ascended(P<0.05).Echocardiographic indexes revealed that in pace with the progression of CKD,left ventricular end diastolic dimension(LVDd),left ventricular end systolic dimension(LVDs),and left ventricular mass index(LVMI)gradually ascended(P<0.05)in cardiac structure,and SV gradually ascended(P<0.05)in cardiac function,while relative wall thickness(RWT),cardiac output(CO),left ventricular ejection fraction(LV-EF),fractional shortening(FS),and transmitral diastolic early peak inflow velocity/transmitral diastolic late peak inflow velocity(E/A)had no statistically significant difference,but E/A gradually declined and was less than1 after CKD2.Left ventricular geometric remodeling revealed that the normal LV geometry group gradually declined from CKD1 to CKD5,with84.5%,70.3%,64.3%,44.4%and38.2%respectively.The abnormal LV geometry groups gradually ascended from CKD1 to CKD5,and there were 32.1% with eccentric hypertrophy,15.2% with concentric hypertrophy,and 14.5% with concentric remodeling.Multiple linear regression revealed that the risk factors of RWT were age and serum phosphorus,the risk factor of LVDd was BMI,the risk factor of LVMI wasβ-CTX,the risk factor of SV was Cystatin C,and the protective factors of E/A were age,gender(female),Ca and BUN.Conclusions The left ventricular structure and function in the patients with ND-CKD were aggravated in pace with the progression of CKD.Age,renal function,serum phosphorus,serum calcium,iPTH,BMI andβ-CTX were related to the changes of left ventricular structure and function.…”
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  15. 595

    Structural Empowerment in Hospital and Professional nursing practice in Nurses of Hashemi-Nejad Hospital: 2010 by MR Maleki, A Ghorbanian

    Published 2014-10-01
    “…For data analysis, and is used Spearman correlation test multivariate linear regression analysis. Results: Professional nursing practice and Structural empowerment has had a positive significant relationship.…”
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  18. 598

    Ancient restorations: computer-based structural approach for the identification and reinterpretation of the Medracen’s constructive sequence by Lamia Amokrane, Tsouria Kassab, Juan Monjo-Carrio

    Published 2022-06-01
    “…A static linear Finite Element Method (FEM) analysis was performed on a simplified 3D model conceived with solid elements to assess the structural behaviour of the structure under the effect of its self-weight and to identify, consequently, its construction sequence. …”
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  19. 599
  20. 600

    Modeling and Optimization of Structural Parameters for High-Efficiency Multi-Jet Polishing of Optical Glass by Zhongchen Cao, Yiwei Miao, Ming Wang, Zhenfeng Zhu

    Published 2025-04-01
    “…However, the optimization of the structural parameters, such as the distribution form of the nozzles and outlet diameter, remains a critical challenge for achieving uniform and stable polishing performance. …”
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