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Journal articles on the topic 'Initial acceptable solution'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Schlatter, Joël L., and Jean-Louis Saulnier. "Pediatrics: Bethanechol Chloride Oral Solutions: Stability and Use in Infants." Annals of Pharmacotherapy 31, no. 3 (1997): 294–96. http://dx.doi.org/10.1177/106002809703100304.

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Objective To assess the stability of a bethanechol chloride oral solution prepared from tablets. Method The initial concentrations were determined. These solutions were stored at 4 °C for 90 days. During this period, the concentrations of the bethanechol chloride solutions were determined by spectrophotometry. The clinical efficacy of the oral solution was tested in five infants with gastroesophageal reflux disease by comparison of gastric pH before and after treatment. Results Significant decomposition of bethanechol chloride occurred in the two formulations. Bethanechol oral solution in ster

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2

Hayes, Brian, and Michael Shearer. "Undercompressive shocks and Riemann problems for scalar conservation laws with non-convex fluxes." Proceedings of the Royal Society of Edinburgh: Section A Mathematics 129, no. 4 (1999): 733–54. http://dx.doi.org/10.1017/s0308210500013111.

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The Riemann initial value problem is studied for scalar conservation laws whose fluxes have a single inflection point. For a regularization consisting of balanced diffusive and dispersive terms, the travelling wave criterion is used to select admissible shocks. In some cases, the Riemann problem solution contains an undercompressive shock. The analysis is illustrated by exploring parameter space for the Buckley–Leverett flux. The boundary of the set of parameters for which there is a physical solution of the Riemann problem for all data is computed. Within the region of acceptable parameters,

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Wu, Xinyu, Rui Guo, Xilong Cheng, and Chuntian Cheng. "Combined Aggregated Sampling Stochastic Dynamic Programming and Simulation-Optimization to Derive Operation Rules for Large-Scale Hydropower System." Energies 14, no. 3 (2021): 625. http://dx.doi.org/10.3390/en14030625.

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Simulation-optimization methods are often used to derive operation rules for large-scale hydropower reservoir systems. The solution of the simulation-optimization models is complex and time-consuming, for many interconnected variables need to be optimized, and the objective functions need to be computed through simulation in many periods. Since global solutions are seldom obtained, the initial solutions are important to the solution quality. In this paper, a two-stage method is proposed to derive operation rules for large-scale hydropower systems. In the first stage, the optimal operation mode

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Voronin, V. V., T. A. Voronina, and V. A. Tcheverda. "Inversion method for initial tsunami waveform reconstruction." Natural Hazards and Earth System Sciences 15, no. 6 (2015): 1251–63. http://dx.doi.org/10.5194/nhess-15-1251-2015.

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Abstract. This paper deals with the application of the r-solution method to recover the initial tsunami waveform in a tsunami source area by remote water-level measurements. Wave propagation is considered within the scope of a linear shallow-water theory. An ill-posed inverse problem is regularized by means of least square inversion using a truncated SVD (singular value decomposition) approach. The method presented allows one to control instability of the numerical solution and to obtain an acceptable result in spite of ill-posedness of the problem. It is shown that the accuracy of tsunami sou

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Borg, Ingwer, and Patrick Mair. "The Choice of Initial Configurations in Multidimensional Scaling: Local Minima, Fit, and Interpretability." Austrian Journal of Statistics 46, no. 2 (2017): 19–32. http://dx.doi.org/10.17713/ajs.v46i2.561.

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Multidimensional scaling (MDS) algorithms can easily end up in local minima, depending on the starting configuration. This is particularly true for 2-dimensional ordinal MDS. A simulation study shows that there can be many local minima that all have an excellent model fit (i.e., small Stress) even if they do not recover a known latent configuration very well, and even if they differ substantially among each other. MDS programs give the user only one supposedly Stress-optimal solution. We here present a procedure for analyzing all MDS solutions resulting from using a variety of different starti

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Li, Xiang, Christophe Claramunt, Xihui Zhang, and Yingping Huang. "A Fast and Deterministic Approach to a Near Optimal Solution for the p-Median Problem." International Journal of Operations Research and Information Systems 3, no. 3 (2012): 1–14. http://dx.doi.org/10.4018/joris.2012070101.

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Finding solutions for the p-median problem is one of the primary research issues in the field of location theory. Since the p-median problem has proved to be a NP-hard problem, several heuristic and approximation methods have been proposed to find near optimal solutions with acceptable computational time. This study introduces a computationally efficient and deterministic algorithm whose objective is to return a near optimal solution for the p-median problem. The merit of the proposed approach, called Relocation Median (RLM), lies in solving the p-median problem in superior computational time

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Voronin, V. V., T. A. Voronina, and V. A. Tcheverda. "Inversion method for initial tsunami waveform reconstruction." Natural Hazards and Earth System Sciences Discussions 2, no. 12 (2014): 7735–72. http://dx.doi.org/10.5194/nhessd-2-7735-2014.

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Abstract. This paper deals with the application of r-solution method to recover the initial tsunami waveform in a tsunami source area by remote water-level measurements. Wave propagation is considered within the scope of a linear shallow-water theory. An ill-posed inverse problem is regularized by means of least square inversion using a truncated SVD approach. The properties of obtained solution are determined to a large extent by the properties of an inverse operator, which were numerically investigated. The method presented allows one to control instability of the numerical solution and to o

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Qi, Naiming, Mingying Huo, and Qiufan Yuan. "Displaced Electric Sail Orbits Design and Transition Trajectory Optimization." Mathematical Problems in Engineering 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/932190.

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Displaced orbits for spacecraft propelled by electric sails are investigated as an alternative to the use of solar sails. The orbital dynamics of electric sails based spacecraft are studied within a spherical coordinate system, which permits finding the solutions of displaced electric sail orbits and optimize transfer trajectory. Transfer trajectories from Earth's orbit to displaced orbit are also studied in an optimal framework, by using genetic algorithm and Gauss pseudospectral method. The initial guesses for the state and control histories used in the Gauss pseudospectral method are interp

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9

Gao, Sixiao, Toshimitsu Higashi, Toyokazu Kobayashi, Kosuke Taneda, Jose I. U. Rubrico, and Jun Ota. "Buffer Allocation via Bottleneck-Based Variable Neighborhood Search." Applied Sciences 10, no. 23 (2020): 8569. http://dx.doi.org/10.3390/app10238569.

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This study addresses the challenging problem of efficient buffer allocation in production lines. Suitable locations for buffer allocation are determined to satisfy the desired throughput, while a suitable balance between solution quality and computation time is achieved. A throughput calculation approach that yields the state probability of production lines is adopted to evaluate the effectiveness of candidate buffer allocation solutions. To generate candidate buffer allocation solutions, an active probability index based on state probability is proposed to rapidly detect suitable locations of

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10

Sitkei, Gy. "Particle motion with air resistance." Progress in Agricultural Engineering Sciences 8, no. 1 (2012): 1–15. http://dx.doi.org/10.1556/progress.8.2012.1.

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Motion of particles with air resistance (e.g. horizontal and inclined throwing) plays an important role in many technological processes in agriculture, wood industry and several other fields. Although, the basic equation of motion of this problem is well known, however, the solutions for practical applications are not sufficient. In this article working diagrams were developed for quick estimation of the throwing distance and the terminal velocity. Approximate solution procedures are presented in closed form with acceptable error. The working diagrams provide with arbitrary initial conditions

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Togo, Dennis F. "Amaya Company: Financial Considerations For Product-Mix LP Models." Journal of Business Case Studies (JBCS) 4, no. 11 (2011): 13. http://dx.doi.org/10.19030/jbcs.v4i11.4817.

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The Amaya Company case illustrates how financial considerations can be added to product-mix linear programming (LP) models to create a more realistic and robust decision aid. Most managerial/cost accounting or operations management courses introduce product-mix LP models but without financial considerations such as cash flows and its interest expense, debt covenants, or the time value of money. Hence, the initial product-mix solution may not be acceptable when managers scrutinize its impact for related financial requirements. Students completing the Amaya Company case add financial considerati

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Hsu, Chih-Hung, Frederick N. F. Chou, and Chung-Ling Chen. "Minimum Cost Water Yield Strategy for Multiple Sources Water Distribution System." Water 14, no. 3 (2022): 435. http://dx.doi.org/10.3390/w14030435.

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Minimizing water supply costs has always been the goal of water companies. However, it is not an easy task to minimize costs and meet customers’ water pressure needs in a water supply system with multiple sources and different unit costs of water discharge. In this paper, we develop a search method that incorporates the concepts of local search and steepest descent. First, we establish the discharge pressure of each water source as a variable and start searching the neighborhood for a feasible initial solution. The steepest descent concept is then used to find the most cost-effective solution

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13

Polat, A., Y. Kaya, K. Bendine, and T. Ş. Özşahin. "Frictionless Contact Problem for a Functionally Graded Layer Loaded Through Two Rigid Punches Using Finite Element Method." Journal of Mechanics 35, no. 5 (2019): 591–600. http://dx.doi.org/10.1017/jmech.2018.55.

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ABSTRACTIn this study, continuous contact problem in the functionally graded (FG) layer loaded with two rigid flat blocks resting on the elastic semi-infinite plane was analyzed by the finite element method. The two-dimensional numerical model of the FG layer was made with the software added to the ANSYS program. This software can be adapted to all contact problem types by making minor changes. The accuracy check of the program was performed by comparing with the analytical solution of the problem by homogeneous layer and its solution by the finite element method. So, fast and practical soluti

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Wang, Jian Wei, Xiang Peng Xiao, and Guo Jie Huang. "Thermodynamic Calculation of the Precipitate in Cu-Ni-Si-Co Alloys and Experimental Investigation." Applied Mechanics and Materials 423-426 (September 2013): 235–40. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.235.

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An initial thermodynamic modeling of the Cu-Ni-Si-Co system was built using CALPHAD approach. The liquid phase and terminal solid solutions were described by substitutional solution model, the nonlinear compounds used sublattice model and the other binary compounds were treated to be stoichiometric compounds. Based on the experimental conditions, the thermodynamic calculations were done to predict the stable precipitates of the alloys and investigated the effect of Co on the phase transitions. The experimental results showed an acceptable agreement with the calculation and verified the reliabi

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Basov, Vladimir V., and Yurii A. Iljin. "On the Cauchy problem with an initial point lying on the boundary of ordinary differential equation’s domain of definition." Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy 65, no. 4 (2020): 636–48. http://dx.doi.org/10.21638/spbu01.2020.406.

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In this paper we investigate the existence of solution of the initial-value problem with an initial point located at the boundary of the domain of definition for the first-order differential equation. This initial-value problem differs from the one accepted in classical theory, where the initial point is always internal for domain. Our aim is to find such conditions for the right-hand side of the equation and the boundary that would guarantee the existence or absence of this solution. In its previous article the authors used the standard Euler polygonal line method to solve this problem and de

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Adriana, Patricia Villegas-Quiceño, Pablo Arias-Echeverri Juan, Aragón-Mena Daira, Ochoa-Cáceres Silvia, and Evelio Arias-Zabala Mario. "Multi-objective optimization in biotechnological processes: application to plant cell suspension cultures of Thevetia peruviana." Revsta Facultad de Ingeniería -redin-, no. 87 (June 19, 2018): 35–40. https://doi.org/10.17533/udea.redin.n87a05.

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Bioprocesses productivity is a compromise between two conflicting objectives, maximization of biomass growth rate and minimization of substrate consumption. In this work, a model based multi-objective optimization problem is solved for improving the process productivity in plant cell suspension cultures of Thevetia peruviana. A solution of the multi-objective problem allowed determining the optimal initial concentrations of substrate and biomass for assuring maximal productivity. Model-based optimization is carried out using a mechanistic model, which includes a representation of the intracell

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17

Moore, Justin B., Nathanael G. Mitchell, Marcus W. Kilpatrick, and John B. Bartholomew. "The Physical Self-Attribute Questionnaire: Development and Initial Validation." Psychological Reports 100, no. 2 (2007): 627–42. http://dx.doi.org/10.2466/pr0.100.2.627-642.

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The Physical Self-attribute Questionnaire was developed for use in conjunction with the Physical Self-perception Profile to model cognitive facets of perceived competence, certainty, importance, and discrepancy from ideal to each of the physical subdomains measured by the latter (Strength, Attractive Body, Condition, and Sport). To this end, two studies were conducted. Study 1 examined the factor structure, test-retest reliability, and validity of the questionnaire in a sample of 154 (28 men, 126 women) undergraduate health students. Reliability and validity were acceptable, and confirmatory f

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Matura, Lea Ann, Annette McDonough, Alexandra L. Hanlon, and Diane L. Carroll. "Developmental and Initial Validation of the Pulmonary Arterial Hypertension Symptom Interference Scale." Journal of Nursing Measurement 24, no. 1 (2016): 40–53. http://dx.doi.org/10.1891/1061-3749.24.1.40.

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Background: Pulmonary arterial hypertension is a chronic illness that produces multiple symptoms and impairs quality of life. Purpose: The purpose of this study was to describe the initial psychometric properties of the Pulmonary Arterial Hypertension Symptom Interference Scale (PAHSIS). Methods: Participants completed a sociodemographic and clinical data form: the PAHSIS and the Medical Outcomes Study Short Form-36 (SF-36). Data analysis included descriptive statistics, principal component analysis (PCA), and Pearson r correlations. Results: PCA revealed a 3-factor solution: Cardiopulmonary,

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19

TYAGI, HIMANSHU, AJAY KUSHWAHA, ANSHUMAN KUMAR, and M. ASLAM. "pH-DEPENDENT SYNTHESIS OF STABILIZED GOLD NANOPARTICLES USING ASCORBIC ACID." International Journal of Nanoscience 10, no. 04n05 (2011): 857–60. http://dx.doi.org/10.1142/s0219581x11009301.

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The stabilization of gold nanoparticles solution synthesized using ascorbic acid at room temperature is examined in detail. It is found that gold nanoparticles (AuNPs) synthesized using ascorbic acid have a narrow size distribution (31 ± 5, 36 ± 6, and 40 ± 5 nm) and can be readily stabilized just by adjusting the initial pH conditions of the reaction solutions. Whilst the initial pH strongly affects the stability of particles, it has no effect on the size of stabilized particles. The particles are nearly spherical having size distribution effectively in the range of 30 nm to 40 nm. Through ti

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20

M. Vasuki, M. Vasuki, M. Karthika M. Karthika, G. Saraswathi, and S. Akila S. Akila. "Batch Adsorption Study of Synthetic Dye Mix in Aqueous Solution using Activated Carbon Prepared from Coconut Shell." Oriental Journal Of Chemistry 38, no. 4 (2022): 1074–80. http://dx.doi.org/10.13005/ojc/380434.

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This investigation focuses on the effectiveness of coconut shell activated carbon in removing synthetic dye mixture from aqueous solutions. Coconut shell activated carbon, an economical and effective adsorbent, was made from agricultural waste raw material and chemically activated by sulphuric acid treatment. Activated carbon is characterised using FT-IR and SEM analysis. Batch adsorption studies were conducted by adjusting conditions such contact time, adsorbent dosage, initial dye concentration and temperature. The equilibrium of the adsorption process was described through analysis of isoth

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Qian, Z., and J. G. Simmonds. "Constructing Exact Dynamic Elasticity Solutions for Axisymmetrically Deformed Plates From Classical Plate Theory Solutions." Journal of Applied Mechanics 65, no. 1 (1998): 1–6. http://dx.doi.org/10.1115/1.2789026.

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This paper addresses the question of how to assess the errors made when the exact three-dimensional linear elasticity solution for the axisymmetric dynamic deformation of an elastic plate is approximated by a solution inferred from the classical plate theory of Kirchhoff. Following the strategy used by Ladeve`ze and Simmonds for beams, the exact solution of a “nearby” three-dimensional problem, which differs from the original problem by the addition of incremental, computable body forces, face shears, and initial conditions—error increments, for short—is expressed in terms of the solution of a

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22

Bridge, Erica, Naomi Peek, Yvonne Leung, et al. "Development and initial psychometric validation of the advisor experience survey." Journal of Clinical Oncology 36, no. 30_suppl (2018): 220. http://dx.doi.org/10.1200/jco.2018.36.30_suppl.220.

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220 Background: Patient, family and public engagement builds strong, sustainable partnerships benefitting the planning, delivery and evaluation of health services. With growing international evidence and increased organizational investment supporting this type of engagement, evaluating the experience of these individuals is essential to ensuring meaningful participation and value. This study describes the development and psychometric properties of the Advisor Experience Survey in order to assess on-going patient, family and public advisor engagement at the system-level. Methods: The developmen

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Ehteshami, Majid, Hamidreza Zolfaghari, Marjan Salari, and Ehsan Teymouri. "Mespilus germanica (MG) and Tribulus terrestris (TT) Used as Biosorbents for Lead Removal from Aqueous Solutions: Adsorption Kinetics and Mechanisms." Advances in Materials Science and Engineering 2021 (November 27, 2021): 1–13. http://dx.doi.org/10.1155/2021/8436632.

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Today, most countries around the globe are facing water resources restrictions, and it is predicted freshwater resources will be more valuable than oil wells in the next century. In the present study, the ability of lead removal using both powders of Mespilus germanica (MG) and Tribulus terrestris (TT) seeds and optimization of the adsorption process have been investigated. Four main parameters were selected for experimental design, namely, pH, time of contact, the ratio of adsorbent to solution volume, and initial concentration of lead in solution, and the optimization of effective parameters

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Miscevic, B., S. Aleksic, Lj Sretenovic, V. Pantelic, S. Trivunovic, and D. Ostojic-Andric. "The effect of time of maturation and CaCl2 on quality of young beef." Biotehnologija u stocarstvu 23, no. 5-6-2 (2007): 49–58. http://dx.doi.org/10.2298/bah0702049m.

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Investigations were carried out on four muscles (M. longissimus dorsi, M. semimembranosus, M. semitendinosus, M. biceps femoris) taken from five young cattle (crosses Domestic Spotted x Limousine) of average body mass prior to slaughtering of 587 kg. On all muscles, 24 h after slaughtering, sensory evaluation was carried out and the following parameters determined: pH value, colour, water binding ability, cooking loss and tenderness (initial values). The remaining part of each muscle was divided into 6 parts, 3 were packaged in plastic foil (control samples), and other 3 were soaked in solutio

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Chen, Zhihua, Xuchen Xu, and Hongbo Liu. "The Successive Approximation Genetic Algorithm (SAGA) for Optimization Problems with Single Constraint." Mathematics 11, no. 8 (2023): 1928. http://dx.doi.org/10.3390/math11081928.

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A limited feasible region restricts individuals from evolving optionally and makes it more difficult to solve constrained optimization problems. In order to overcome difficulties such as introducing initial feasible solutions, a novel algorithm called the successive approximation genetic algorithm (SAGA) is proposed; (a) the simple genetic algorithm (SGA) is the main frame; (b) a self-adaptive penalty function is considered and the penalty factor is adjusted automatically by the proportion of feasible and infeasible solutions; (c) a generation-by-generation approach and a three-stages evolutio

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Muhammad, Adam, and I. A. Alnour. "Numerical solution of deuteron potential depth using python." IOP Conference Series: Materials Science and Engineering 1231, no. 1 (2022): 012005. http://dx.doi.org/10.1088/1757-899x/1231/1/012005.

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Abstract Deuteron potential depth is hardly solvable analytically, thus this study uses a numerical method through Python programming language to calculate the depth of the potential well by coding the transcendental equation. Two different approaches were used, in which the first approach is by changing the Vin (initial value) value in the code to obtain the Vo values as an output, and the second, by keeping Vin value constant and changing the radius R values to obtain different V o values in order to find the relationship between Vo and radius R. The mean average value of Vo was found to be

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Devendorf, Erich, and Kemper Lewis. "Characterization of the Transient Response of Coupled Optimization in Multidisciplinary Design." Mathematical Problems in Engineering 2013 (2013): 1–15. http://dx.doi.org/10.1155/2013/910209.

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Time is an asset of critical importance in a multidisciplinary design process and it is desirable to reduce the amount of time spent designing products and systems. Design is an iterative activity and designers consume a significant portion of the product development process negotiating a mutually acceptable solution. The amount of time necessary to complete a design depends on the number and duration of design iterations. This paper focuses on accurately characterizing the number of iterations required for designers to converge to an equilibrium solution in distributed design processes. In di

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28

Semakhin, Andrey M. "The Frank-Wulf method in modeling information systems." Yugra State University Bulletin 20, no. 2 (2024): 113–19. http://dx.doi.org/10.18822/byusu202402113-119.

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Subject of research: the process of choosing the best option for the structure of an information system under given conditions at the design stage. Purpose of research: to increase the efficiency and quality of the validity of decision-making, to reduce time and financial costs when choosing the structure of an information system at the design stage. Methods and objects of research: the object of research is an information system. The problem of nonlinear programming is formulated. A mathematical model of choosing the optimal variant of an information system is presented. By the method of expe

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Nikonov, V. V. "2D TESTING OF A FINITE DIFFERENCE SCHEME FOR MODELLING OF A VISCOUS DIFFUSION PROCESS IN COMPRESSIBLE GAS." Izvestiya of Samara Scientific Center of the Russian Academy of Sciences 22, no. 5 (2020): 128–31. http://dx.doi.org/10.37313/1990-5378-2020-22-5-128-131.

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Viscous subproblem of direct numerical simulation of compressible gas is solved. This subproblem is tested on the two-dimensional problem of impulse start of a flat plate (Stokes’ problem). Three calculations were made with the different initial conditions and velocity fields were obtained. The numerical results are compared with the solution of Stokes’ problem. Analyzing the results, we can conclude that in order to achieve acceptable accuracy, it suffices to choose a time step according to the rule that the author formulated in his earlier works.

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Maria Vaglieco, Bianca, Simona Silvia Merola, Adrian Irimescu, Vasco Zollo, and Raffaele De Marinis. "Online Monitoring Solutions of Efficiency for Automotive EGR Heat Exchangers." E3S Web of Conferences 162 (2020): 01003. http://dx.doi.org/10.1051/e3sconf/202016201003.

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Internal combustion engines are the dominating technology in the automotive transport sector. Within this context, even incremental improvements in efficiency are essential for reducing overall environmental impact. Maintaining rated specifications is also an important issue, with monitoring solutions being more and more the focus of development. Cooled exhaust gas recirculation (EGR) is a well established technology that allows improvements in efficiency and reduction of emissions. The present work looks at different solutions focused on the integration of a digital sensor directly into EGR v

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Qalehe, Leila, Mozhdeh Afshar Kermani, and Tofigh Allahviranloo. "Solving First-Order Differential Equations of Z-Numbers’ Initial Value Using Radial Basic Function." International Journal of Differential Equations 2020 (May 26, 2020): 1–11. http://dx.doi.org/10.1155/2020/5924847.

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In this paper, a method was proposed based on RBF for numerical solution of first-order differential equations with initial values that are valued by Z-numbers. The proposed method consists of two parts. The first part has stated the amount of limitation of the fragmentation solution, while the second part has described the assurance of the first part. The limitation section also has two parts. The first part has included the initial condition of the problem, while the second part has included the RBF network. The confidence interval was also considered as a function based on the probability f

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Wang, A. C., and T. W. Lee. "Design and Analysis of Momentary-Dwell Mechanisms." Journal of Mechanisms, Transmissions, and Automation in Design 107, no. 1 (1985): 131–40. http://dx.doi.org/10.1115/1.3258676.

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This paper presents a general theory for the dwell characteristics and for the synthesis of momentary-dwell mechanisms. Dwell conditions are obtained from the simultaneous solution of a set of equations derived recursively through the differentiations of a general form of displacement equation. A general synthesis approach is presented. It involves the use of analytical solutions of the lower-order dwell criteria as initial estimates and the development of a computer-aided procedure to subsequently readjust the mechanism proportions by heuristic optimization. The proportions thus obtained repr

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Wan, Jiteng, Chunji Jin, Banghai Liu, Zonglian She, Mengchun Gao, and Zhengyang Wang. "Electrochemical oxidation of sulfamethoxazole using Ti/SnO2-Sb/Co-PbO2 electrode through ANN-PSO." Journal of the Serbian Chemical Society 84, no. 7 (2019): 713–27. http://dx.doi.org/10.2298/jsc180810025w.

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Even in a trace amounts, the presence of antibiotics in aqueous solution is getting more and more attention. Accordingly, appropriate technologies are needed to efficiently remove these compounds from aqueous environments. In this study, we have examined the electrochemical oxidation (EO) of sulfamethoxazole (SMX) on a Co modified PbO2 electrode. The process of EO of SMX in aqueous solution followed the pseudo-first-order kinetics, and the removal efficiency of SMX reached the maximum value of 95.1 % within 60 min. The effects of major factors on SMX oxidation kinetics were studied in detail b

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Parry, James D., and Alan M. Hofmeister. "Development and Validation of an Expert System for Special Educators." Learning Disability Quarterly 9, no. 2 (1986): 124–32. http://dx.doi.org/10.2307/1510361.

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The authors describe the development and initial validation of a computer-based expert system, Mandate Consultant (Parry, 1985), designed to review the regulatory procedures for developing Individual Education Programs (IEP). The formative process involved three phases: (a) definition of need and proposed solution, (b) design of a prototype, and (c) progressive refinement through field-testing and revision cycles. The summative component included a two-phase experimental design for validating the accuracy of expert system output through comparisons with human experts. The findings indicated th

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Raskin, Lev, Larysa Sukhomlyn, Artur Hatunov, and Dmytro Sokolov. "The problems of rational allocation of a multidimensional resource for multi-nomenclature production in conditions of uncertainty of the initial data." Bulletin of the National Technical University "KhPI" A series of "Information and Modeling" 1, no. 1 (13) (2025): 22–34. https://doi.org/10.20998/2411-0558.2025.01.02.

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Object of research: the problem of rational allocation of a multidimensional resource to ensure multi-nomenclature production in conditions of uncertainty. Mathematical model of the problem: nonlinear non-separable multi-index mathematical programming problem based on a system of linear multi-index constraints. An important feature complicating the problem is the fuzziness of the source data. Convergent iterative procedure based on the proven theorem is proposed to solve the problem. The computational procedure consist of two stages. At the first stage, an acceptable, constraint-satisfying ini

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Ma, Chih Ming, Bo-Yuan Yang, and Gui-Bing Hong. "Husk of Agarwood Fruit-Based Hydrogel Beads for Adsorption of Cationic and Anionic Dyes in Aqueous Solutions." Molecules 26, no. 5 (2021): 1437. http://dx.doi.org/10.3390/molecules26051437.

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Hydrogel beads based on the husk of agarwood fruit (HAF)/sodium alginate (SA), and based on the HAF/chitosan (CS) were developed for the removal of the dyes, crystal violet (CV) and reactive blue 4 (RB4), in aqueous solutions, respectively. The effects of the initial pH (2–10) of the dye solution, the adsorbent dosage (0.5–3.5 g/L), and contact time (0–540 min) were investigated in a batch system. The dynamic adsorption behavior of CV and RB4 can be represented well by the pseudo-second-order model and pseudo-first-order model, respectively. In addition, the adsorption isotherm data can be exp

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Secer, Aydin, and Yasemin Bakir. "Chebyshev wavelet collocation method for Ginzburg-Landau equation." Thermal Science 23, Suppl. 1 (2019): 57–65. http://dx.doi.org/10.2298/tsci180920330s.

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The main aim of this paper is to investigate the efficient Chebyshev wavelet collocation method for Ginzburg-Landau equation. The basic idea of this method is to have the approximation of Chebyshev wavelet series of a non-linear PDE. We demonstrate how to use the method for the numerical solution of the Ginzburg-Landau equation with initial and boundary conditions. For this purpose, we have obtained operational matrix for Chebyshev wavelets. By applying this technique in Ginzburg-Landau equation, the PDE is converted into an algebraic system of non-linear equations and this system has been sol

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Samann, Fars, Andreas Rausch, and Thomas Schanze. "Electrical Dipole Source Localization using Hybrid Least Squares Method in combination with ICA." Current Directions in Biomedical Engineering 5, no. 1 (2019): 361–63. http://dx.doi.org/10.1515/cdbme-2019-0091.

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AbstractIn biomedical engineering, dipole source localization is commonly used to identify brain activities from scalp recorded potentials, which is known as inverse problem of electroencephalography (EEG) source localization. However, this problem is fundamental in biomedical engineering, medicine and neuroscience. The EEG inverse problem is non-linear, in addition, it is ill-posed and the solver can be unstable, i.e. the solution is non-unique and it is highly sensitive to small changes of the measured signal (noise). For solving the EEG inverse problem iterative methods, like Levenberg-Marq

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Romanuke, Vadim. "Acceptable-and-attractive Approximate Solution of a Continuous Non-Cooperative Game on a Product of Sinusoidal Strategy Functional Spaces." Foundations of Computing and Decision Sciences 46, no. 2 (2021): 173–97. http://dx.doi.org/10.2478/fcds-2021-0012.

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Abstract A problem of solving a continuous noncooperative game is considered, where the player’s pure strategies are sinusoidal functions of time. In order to reduce issues of practical computability, certainty, and realizability, a method of solving the game approximately is presented. The method is based on mapping the product of the functional spaces into a hyperparallelepiped of the players’ phase lags. The hyperparallelepiped is then substituted with a hypercubic grid due to a uniform sampling. Thus, the initial game is mapped into a finite one, in which the players’ payoff matrices are h

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Yap, Chien, Chi Lui Ho, Yin Shan Lim, and Siang Fei Yeoh. "Stability of Anidulafungin in Concentrated Pharmaceutical Solution." Open Forum Infectious Diseases 4, suppl_1 (2017): S335—S336. http://dx.doi.org/10.1093/ofid/ofx163.797.

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Abstract Background Currently, the reconstitution instructions in the package insert indicate that 100 mg of anidulafungin powder is to be dissolved in 30 ml of sterile water for injection and this reconstituted solution is to be further mixed with 100 ml of either normal saline (NS) or dextrose 5% (w/v) (D5) to give a final infusion solution of concentration 0.77 mg/mL. The compatibility of the reconstituted solution with diluents other than NS or D5 has not been established and there is no literature to support the the use of a more concentrated infusion solution. Thus, the infusion solution

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Shalaby, ElSayed M., Aladdin M. Srour, Siva S. Panda, Riham F. George, Andrew N. Fitch, and Adel S. Girgis. "Synthesis, X-ray powder diffraction and DFT-D studies of indole-based compounds." Zeitschrift für Kristallographie - Crystalline Materials 233, no. 6 (2018): 421–27. http://dx.doi.org/10.1515/zkri-2017-2106.

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Abstract Four indole-based compounds have been synthesized and their crystal structures determined using high-resolution synchrotron powder X-ray diffraction. In vacuo density function theory (DFT) optimization has been used in building initial molecular models for structure solution with the help of the Cambridge structure database. All four compounds were found to crystallize in the monoclinic space group P21/c. Dispersion-corrected DFT (DFT-D) has been used for experimental crystal structure validation with acceptable agreement found between the DFT-optimized and final refined structures. T

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Lascsáková, Marcela. "INFLUENCE OF TWO DIFFERENT ACCURACY IMPROVEMENTS TO NUMERICAL PRICE FORECASTING." Acta logistica 7, no. 4 (2020): 253–60. http://dx.doi.org/10.22306/al.v7i4.187.

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The paper aims to compare two different strategies of accuracy improvement of studied prognostic numerical models. The price prognoses of aluminium on the London Metal Exchange were determined as the numerical solution of the Cauchy initial problem for the 1st order ordinary differential equation. To make the numerical model more accurate two ideas were realized, the modification of the initial condition value by the nearest stock exchange (initial condition drift) and different way of creation of the differential equation in solved Cauchy initial problem (using two known initial values). With

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Dudkina, Aija, and Viktorija Perepjolkina. "DEVELOPMENT AND INITIAL VALIDATION OF THE STRESS SYMPTOMS SCALE." SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference 7 (May 28, 2021): 67–85. http://dx.doi.org/10.17770/sie2021vol7.6426.

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The aim of this study is to develop and to perform an initial validation of the Latvian and Russian version of the Stress Symptoms Scale. A preliminary version of the scale (k = 65) were administrated to the test development sample as an on-line survey. Additionally participants (N = 272, aged from 19 to 68, M = 37.2, SD = 11.6, 13% male) filled in the Latvian or Russian version of the Perceived Stress Scale-4 (PSS-4), and responded using 10-point scale on two criterion questions about the frequency and intensity of the experienced stress during the last two weeks. Information of their age, ge

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Podgornaya, V. M. "On the Suboptimal Solution of the Speed-In-Action Problem for a Linear Discrete System in the Case of Asymmetric Control Constraints." Modelling and Data Analysis 14, no. 3 (2024): 63–86. http://dx.doi.org/10.17759/mda.2024140304.

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<p>The paper considers a linear discrete system with bounded control. The speed-in-action problem is solved for the system, that is, it is required to construct a control process that transfers the system from the initial state to the origin in a minimum number of steps. If the set of acceptable control values has a superellipse structure, then the problem of calculating optimal control can be reduced to solving a system of algebraic equations. A superellipsoidal approximation method has been developed for sets of arbitrary structure, and the case of asymmetric sets has been considered.

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Hansen, Thomas O., Nathaniel A. White, and Douglas T. Kemp. "Total parenteral nutrition in four healthy adult horses." American Journal of Veterinary Research 49, no. 1 (1988): 122–24. https://doi.org/10.2460/ajvr.1988.49.01.122.

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SUMMARY Total parenteral nutrition was accomplished in 4 healthy adult horses. During the 10-day study, the horses were not permitted to ingest food or water. Body weight was maintained at 94% of initial values without clinical evidence of dehydration. Serum urea nitrogen and triacyl-glycerol concentrations decreased during the study, without other significant hematologic or biochemical changes. Horses adapted without problems to the routine of iv feeding and confinement. All horses were healthy at the conclusion of the study. It was concluded that intravenous feeding with a lipid-glucose-amin

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Prokopenkov, Vladymyr. "POLYNOMIAL ALGORITHM FOR FINDING A HAMILTONIAN CYCLE ON A GRAPH." Bulletin of NTU "KhPI". Series: Strategic management, portfolio, program and project management, no. 1(3) (April 17, 2021): 55–65. http://dx.doi.org/10.20998/2413-3000.2021.3.8.

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The subject of research is the solution of the problem of finding a Hamiltonian cycle on a graph, which in discrete mathematics belongs to the NP complexity class and still retains interest. The aim of this work is to develop a new algorithm for solving this problem, which guarantees finding the optimal solution with polynomial time. In [1], an analysis of the current state of the problem was performed, the shortcomings of existing methods of solving were noted, and new principles and method of finding solution were presented. Known methods for solving the problem are based on the implementati

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Zhou, Binghai, and Wenlong Liu. "Energy-efficient multi-objective scheduling algorithm for hybrid flow shop with fuzzy processing time." Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 233, no. 10 (2019): 1282–97. http://dx.doi.org/10.1177/0959651819827705.

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Increasing costs of energy and environmental pollution is prompting scholars to pay close attention to energy-efficient scheduling. This study constructs a multi-objective model for the hybrid flow shop scheduling problem with fuzzy processing time to minimize total weighted delivery penalty and total energy consumption simultaneously. Setup times are considered as sequence-dependent, and in-stage parallel machines are unrelated in this model, meticulously reflecting the actual energy consumption of the system. First, an energy-efficient bi-objective differential evolution algorithm is develop

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Dodic, Marjan, Branimir Krstic, Bosko Rasuo, Mirko Dinulovic, and Aleksandar Bengin. "Numerical Analysis of Glauert Inflow Formula for Single-Rotor Helicopter in Steady-Level Flight below Stall-Flutter Limit." Aerospace 10, no. 3 (2023): 238. http://dx.doi.org/10.3390/aerospace10030238.

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This article addresses the numerical computation problem of induced inflow ratio based on the helicopter momentum theory in forward flight. The Glauert inflow formula (equation) is a nonlinear equation usually solved by the Newton–Raphson method in a relatively small number of iterations. However, many high-order convergence multipoint iterative methods have been developed over the last decade. The study examines several selected methods in terms of finding ones that provide a solution in only one iteration with acceptable accuracy. Furthermore, the influence of initial guesses on the accuracy

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Xu, Biao, and Minyan Lu. "Agent-Based Virtual Machine Migration for Load Balancing and Co-Resident Attack in Cloud Computing." Applied Sciences 13, no. 6 (2023): 3703. http://dx.doi.org/10.3390/app13063703.

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The majority of cloud computing consists of servers with different configurations which host several virtual machines (VMs) with changing resource demands. Additionally, co-located VMs are vulnerable to co-resident attacks (CRA) in a networked environment. These two issues may cause uneven resource usage within the server and attacks on the service, leading to performance and security degradation. This paper presents an Agent-based VM migration solution that can balance the burden on commercially diverse servers and avoid potential co-resident attacks by utilizing VM live migrations. The Agent

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Nikoobin, A., and M. Moradi. "Indirect solution of optimal control problems with state variable inequality constraints: finite difference approximation." Robotica 35, no. 1 (2015): 50–72. http://dx.doi.org/10.1017/s0263574715000521.

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SUMMARYIn this paper, a method for the indirect solution of the optimal control problem (OCP) in the presence of pure state variable inequality constraints (SVICs) and mixed state-control inequality constraints (SCIC), without a need for a close initial guess is presented. In the proposed method, using the finite difference approximation (FDA), the pure SVICs are converted to SCIC. Here, the distance of the constraint function to the feasibility bounds of the constraint is computed in every situation and the control signal is chosen appropriately to facilitate the constraint stays safe. In thi

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