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681
Evaluating the Effectiveness of Quality Control Measures in Project Management: A Study of Construction Companies in Lusaka
Published 2025-03-01“…Quality control measures implemented in project management functions of construction companies function as essential elements which support project achievement, client fulfillment, and business endurance. …”
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682
PARAMETER ANALYSIS AND OPTIMIZATION OF MAGNETIC ADSORPTION UNIT FOR CRAWLER WALL-CLIMBING ROBOT (MT)
Published 2023-01-01“…The length, the width, the height of the permanent magnet, the thickness of the yoke and the distance between the permanent magnet and the wall are selected as the design variables. After the optimized design, the adsorption efficiency of the MAU is increased from 2.029 7 to 3.938 1.…”
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683
Optimization Study of PVT Coupled Water Loop Heat Pump Energy Supply System
Published 2025-01-01“…By employing the Hooke-Jeeves algorithm, the system's design and operation parameters were optimized with annual cost and system COP as objective functions. Design variables included PVT inclination, azimuth, area, heat pump capacity, and tank volume, while operational variables were PVT backplate temperature and tank temperature. …”
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684
Optimization of K-Shaped Metal Sealing Ring for Subsea Tubing Hanger Based on Response Surface Method
Published 2025-01-01“…To address the issue of low optimization efficiency due to the need for repeated finite element calculations during the optimization process, quadratic response surface models are established for the sealing performance indicators of the K-shaped seal ring, which were then used as the optimization objective functions to enhance the optimization efficiency. …”
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685
Fuzzy Goal Programming Procedure to Bilevel Multiobjective Linear Fractional Programming Problems
Published 2010-01-01“…In the proposed procedure, the membership functions for the defined fuzzy goals of the decision makers (DMs) objective functions at both levels as well as the membership functions for vector of fuzzy goals of the decision variables controlled by first-level decision maker are developed first in the model formulation of the problem. …”
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686
Comparative Evaluation of Vibratory Physiotherapy Methods in the Early Period after Cardiac Surgery
Published 2022-01-01“…Mechanical respiratory therapy procedures led to significant improvement in gas exchange variables, as evidenced by an increase in SpO2 in Groups 1 and 2 (p = 0.000009 and 0.000001, respectively) and a decrease in the proportion of patients with impaired oxygenating lung function (SpO2 below 92%) by 11 and 12 times, respectively (p < 0.01). …”
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687
Trajectory Planning Based on Screw Theory with Consideration of the Optimal Berth Position for a Space Robot
Published 2019-01-01“…First, the berth position is transformed into the desired position of the end-effector, and its constraints are described. Joint variables are parameterized using a sinusoidal function combined with a five-order polynomial function. …”
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688
Analysis the Impact of Covid-19 on Green Accounting and Its Implications on Profitability
Published 2025-03-01“…The next difference is that the Performance and Environmental Disclosure variables function as both Y variables and X variables (intervening). …”
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689
Sensory profiles in older adults with orthopedic conditions during quiet stance: a cross-sectional study
Published 2025-02-01“…Methods Fifty-one older adults (76.9 ± 7.6 years) were divided into 2 Functional Groups (FG-/FG+) according to a composite score that included 3 variables (gait speed, grip strength and fear of falling). …”
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690
Some Iterative Methods Free from Derivatives and Their Basins of Attraction for Nonlinear Equations
Published 2013-01-01“…First, we make the Jain's derivative-free method optimal and subsequently increase its efficiency index from 1.442 to 1.587. Then, a novel three-step computational family of iterative schemes for solving single variable nonlinear equations is given. …”
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691
Estimation of Total Suspended Solids Concentration in Streams Using Regression and Artificial Neural Networks Methods
Published 2023-01-01“…Considering the efficiency values, it has been understood that the use of date information as an independent variable will positively affect the model performance in the stream TSS modeling studies. …”
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692
Closed-Form Solutions to Differential Equations via Differential Evolution
Published 2015-01-01“…First, the problem is stated as an optimization problem where the independent variables are elementary functions. Second, as the domain of DE is real numbers, we propose a grammar that assigns numbers to functions. …”
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693
Cost-effective process design for methanol synthesis from carbon dioxide hydrogenation
Published 2025-09-01“…Accordingly, this research introduces an optimization framework capable of handling diverse process configurations, operating variables, and their interactions. This approach enables effective optimization using total annual cost (TAC) as the objective function and significantly enhances process design efficiency. …”
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694
Robust Optimization Research of Cyber–Physical Power System Considering Wind Power Uncertainty and Coupled Relationship
Published 2024-09-01“…Furthermore, the deterministic power balance constraints are relaxed into inequality constraints that account for wind power forecasting errors through fuzzy variables. The lower-level model focuses on minimizing traffic load shedding by establishing a topology–function-constrained information network traffic model based on the maximum flow principle in graph theory, thereby improving the efficiency of network flow transmission. …”
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695
Online identification of stability region for large-scale wind farms, Part I: Clustering based piecewise affine impedance modeling
Published 2025-09-01“…In each partition, the impedance is expressed as a first-order explicit function of the complex variable and the operating state variables. …”
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696
Research on Robust Adaptive Model Predictive Control Based on Vehicle State Uncertainty
Published 2025-05-01“…To overcome these limitations, three key innovations are introduced: a three-degree-of-freedom vehicle dynamic model integrated with recursive least squares-based online estimation of tire slip stiffness for real-time lateral force compensation; an adaptive weight adjustment mechanism that dynamically balances control energy consumption and tracking accuracy by tuning cost function weights based on real-time state errors; and a dynamic constraint relaxation strategy using slack variables with variable penalty terms to resolve infeasibility while suppressing excessive constraint violations. …”
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697
Creating Balance on Bandwidth Consumption using Network Coding in Wireless Sensor Networks
Published 2024-02-01“…For this purpose, we need to calculate the derivative of the Lagrangian function relative to its variables, in order to determine the condition as a multi-excited multi-equation device. …”
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698
Retrieval of carbon and inorganic phosphorus during hydrothermal carbonization: ANN and RSM modeling
Published 2024-12-01“…Next, Multilayer Perceptron (MLP) and Radial Basis Function (RBF) were used to compare the results and improve the model fit. …”
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699
Support vector regression model for the prediction of buildings’ maximum seismic response based on real monitoring data
Published 2024-12-01“…Our results demonstrate that SVR-MDR model outperform other machine learning models such as kernel ridge regression and decision tree models, and SVR-MDR and RSVR-MDR models outperform conventional loglinear regression and multinomial models, because SVR can map the complex nonlinear function of multiple variables and consider the available information of buildings especially the fundamental frequency. …”
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700
Multi-Objective Optimal Design of 200 kW Permanent Magnet Synchronous Motor Based on NSGA-II
Published 2025-05-01“…Interior permanent magnet synchronous motors (IPMSMs) are widely applied as drive motors in electric vehicles because they have the advantages of high power density, high efficiency, and excellent dynamic performance. This paper introduces a framework for multi-objective optimization, tailored for the demands of V-Shaped IPMSMs, which involves high-dimensional variables. …”
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