Journal articles: 'Variant solution'

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Singh, Narinder, and S. B. Singh. "Hybrid Algorithm of Particle Swarm Optimization and Grey Wolf Optimizer for Improving Convergence Performance." Journal of Applied Mathematics 2017 (2017): 1–15. http://dx.doi.org/10.1155/2017/2030489.

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A newly hybrid nature inspired algorithm called HPSOGWO is presented with the combination of Particle Swarm Optimization (PSO) and Grey Wolf Optimizer (GWO). The main idea is to improve the ability of exploitation in Particle Swarm Optimization with the ability of exploration in Grey Wolf Optimizer to produce both variants’ strength. Some unimodal, multimodal, and fixed-dimension multimodal test functions are used to check the solution quality and performance of HPSOGWO variant. The numerical and statistical solutions show that the hybrid variant outperforms significantly the PSO and GWO variants in terms of solution quality, solution stability, convergence speed, and ability to find the global optimum.

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Ram Babu, D., A. Lenin, and G. B. Bhaskar. "Advanced Product Configuration in Manufacturing Using Enterprise Resource Planning Variant Configuration with Optimization in Manufacturing and Assembly Processes." Applied Mechanics and Materials 591 (July 2014): 94–97. http://dx.doi.org/10.4028/www.scientific.net/amm.591.94.

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. Variant Configuration is one of the advanced functions of the System Application and Product in data processing (SAP) business process solutions. Many enterprises, particularly from the complex production industry, can be benefited from the use of Variant Configuration. This paper demonstrates on how a product configuration is performed for a complex variable product using SAP variant configuration. The automotive pump manufacturing was as complex configurable product that involves different variants of the product. This artifact also explains on how we leverage the SAP Variant configuration functionality and achieving complex variant pump configuration with simplified solution.

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Peldschus, Friedel. "MULTIPLE-CRITERIA ANALYSIS IN THE CONSTRUCTION OF MOTORWAYS." Technological and Economic Development of Economy 11, no. 1 (March 31, 2005): 32–35. http://dx.doi.org/10.3846/13928619.2005.9637680.

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Several construction variants are discussed for the extension of the motorway network in Thuringia (Germany). The best variant is determined according to several criteria: construction period, costs, durability, environmental protection and economic viability. After the characterisation of the considered construction solutions a numerical comparison is made using the software LEVI 3.0. Thereby the optimal variant is chosen taking into account the mentionned criteria and the solution is explained.

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Kueffner, Robert, Hui Li, Kakit Cheung, Marc Fink, Zachry Soens, Jinlian Wang, Osman Siddiqui, et al. "VONC: A solution for the clinical assessment of somatic genomic alterations." Journal of Clinical Oncology 37, no. 15_suppl (May 20, 2019): e13155-e13155. http://dx.doi.org/10.1200/jco.2019.37.15_suppl.e13155.

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e13155 Background: Next generation sequencing (NGS) technology is transforming the diagnosis and treatment of cancer. However, the massive scale of data has overwhelmed pathologists who need streamlined tools to process this data, automate report generation and minimize human errors. Methods: We developed the Variant interpretation station for ONCology, VONC, as an end-to-end solution for moving from NGS whole exome and transcriptome data to actionable clinical reports that support cancer diagnosis, prognosis, and personalized treatment strategies for solid and hematologic malignancies. Results: VONC integrates all steps for moving from raw NGS data, variant calling and LIMS, to comprehensive annotation of variants. The main functional feature of VONC is a transparent process that effectively combines automated and expert curation to identify clinically relevant and actionable driver variants. VONC also enables efficient management of multi-group, -role, -system and -site curation processes. In contrast to current tools, VONC handles all somatic and constitutional genomic alterations including SNV, indel, CNV, fusion, splicing, and gene expression. Key data sources include 1) 350,000 variants for 50 tumor types across 57,000 sequenced cancer patients; 2) variant frequencies estimated from 1.5M cancer patients; 3) expert curated literature evidence from 16,818 papers covering 26,496 alterations spanning 2,448 cancer driver genes; and 4) curated database of FDA-approved drugs and recruiting clinical trials. VONC presents a prioritized list of variants in oncogenes and tumor suppressors through functional (literature-based) and structure-based (hotspots) algorithms. This is coupled to all supporting information necessary for clinical decision making. Curators can quickly screen variant type, QC metrics, and frequency in sequencing cohorts of cancer patients as well as healthy subjects. Within minutes, variants can be triaged and annotated with FDA approved, NCCN guidelines reported, or literature supported therapeutics, including resistance and contraindicated. Conclusions: VONC is a clinically-ready tool with an intuitive end-user interface tailored for the rapid assessment of variants in cancer patients, to facilitate personalized cancer medicine in a high-throughput laboratory.

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Jabbari, A., H. Kheiri, and A. Bekir. "Analytical solution of variant Boussinesq equations." Mathematical Methods in the Applied Sciences 37, no. 6 (June 19, 2013): 931–36. http://dx.doi.org/10.1002/mma.2853.

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Iwaszko, J., M. Strzelecka, and K. Kudła. "Surface modification of AZ91 magnesium alloy using GTAW technology." Bulletin of the Polish Academy of Sciences Technical Sciences 65, no. 6 (December 1, 2017): 917–26. http://dx.doi.org/10.1515/bpasts-2017-0099.

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AbstractIn this study, surface remelting treatment of the AZ91 magnesium alloy by means of welding using a non-consumable electrode in an inert gas shield was carried out. Three variants of surface treatment were used, i.e. the single torch variant with a single heat source without cooling down the samples, the single torch variant with a single heat source and a cooling system with liquid nitrogen, and the double welding torch variant with a double heat source in the torches operating in a tandem configuration. Experimental verification of the applied apparatus solutions was based on both macro- and microstructural assessment of the obtained effects. Comparative analysis of the variants used and the obtained microstructural results allowed the authors to indicate the deficiencies and limitations of particular solutions and to single out the best solution that would be useful for modifying the surface layers of magnesium alloys, as well as other materials having a strong oxygen affinity.

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Chanyshev, Anvar, and Ilgizar Abdulin. "TWO VARIANTS OF OUT-OF-LIMIT DEFORMATION OF SOLID AROUND WORKING." Interexpo GEO-Siberia 2, no. 5 (2019): 81–88. http://dx.doi.org/10.33764/2618-981x-2019-2-5-81-88.

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In the paper stress-strain behavior of solid around working in case of out-of-limit deformation when flat strain occurs is studied. Two limit variants are considered: when modulus of volumetric compression has much more value than modulus of decrease and vice a versa. In the first variant sizes of solid destruction zone are obtained, depending on limit strains of elasticity and strength of solid material. In the second variant solution at destruction zone differs from traditional elastic plastic solutions by maximal tangential stress increases with increasing of distance from working contour.

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Radomski, Bartosz, and Tomasz Mróz. "The Methodology for Designing Residential Buildings with a Positive Energy Balance—Case Study." Energies 14, no. 16 (August 20, 2021): 5162. http://dx.doi.org/10.3390/en14165162.

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The article presents the results of the application of an original methodology for designing residential buildings with a positive energy balance in accordance with the principles of sustainable development. The methodology was verified using a computational example involving the selection of a compromise solution for a single-family residential building with a positive energy balance located in Warsaw, Poland. Three different models of decision-makers’ preferences were created, taking into account selected decision sub-criteria. Three technical solutions were identified, permissible according to the principles and guidelines for designing buildings with a positive energy balance. As a result of the performed calculations, the final order of the analyzed variants was obtained, from the most preferred to the least accepted solution. Variant 2 is definitely the most advantageous solution, being the best in a group of 20 to 26 evaluation sub-criteria—depending on the adopted model of the decision-maker’s preferences. Its ranking index Ri ranged from 0.773 to 0.764, while for the other variants it was much lower and varied from 0.258 to 0.268 for variant 1, and from 0.208 to 0.226 for variant 3. The methodology used for the case study proved to be applicable. The developed methodology facilitates the process of designing residential buildings with a positive energy balance, which is an extremely complex process.

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Gollob, Michael, Jeffrey S. Rosenthal, and Kevin Thorpe. "The Probability of Pathogenicity in Clinical Genetic Testing: A Solution for the Variant of Uncertain Significance." International Journal of Statistics and Probability 5, no. 4 (June 11, 2016): 52. http://dx.doi.org/10.5539/ijsp.v5n4p52.

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We present a direct calculation for determining the probability that a rare genetic variant is the cause of an observed disease, under appropriate assumptions, in terms of the joint prevalence of the disease and of rare variants. Our calculation provides a resolution of the so-called ``variant of unknown (or uncertain) significance'' problem, which has plagued medical genetics researchers.

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Zhang, Lipu, Yinghong Xu, and Yousong Liu. "An Elite Decision Making Harmony Search Algorithm for Optimization Problem." Journal of Applied Mathematics 2012 (2012): 1–15. http://dx.doi.org/10.1155/2012/860681.

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This paper describes a new variant of harmony search algorithm which is inspired by a well-known item “elite decision making.” In the new algorithm, the good information captured in the current global best and the second best solutions can be well utilized to generate new solutions, following some probability rule. The generated new solution vector replaces the worst solution in the solution set, only if its fitness is better than that of the worst solution. The generating and updating steps and repeated until the near-optimal solution vector is obtained. Extensive computational comparisons are carried out by employing various standard benchmark optimization problems, including continuous design variables and integer variables minimization problems from the literature. The computational results show that the proposed new algorithm is competitive in finding solutions with the state-of-the-art harmony search variants.

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Kis, Tamás, András Kovács, and Csaba Mészáros. "On Optimistic and Pessimistic Bilevel Optimization Models for Demand Response Management." Energies 14, no. 8 (April 9, 2021): 2095. http://dx.doi.org/10.3390/en14082095.

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This paper investigates bilevel optimization models for demand response management, and highlights the often overlooked consequences of a common modeling assumption in the field. That is, the overwhelming majority of existing research deals with the so-called optimistic variant of the problem where, in case of multiple optimal consumption schedules for a consumer (follower), the consumer chooses an optimal schedule that is the most favorable for the electricity retailer (leader). However, this assumption is usually illegitimate in practice; as a result, consumers may easily deviate from their expected behavior during realization, and the retailer suffers significant losses. One way out is to solve the pessimistic variant instead, where the retailer prepares for the least favorable optimal responses from the consumers. The main contribution of the paper is an exact procedure for solving the pessimistic variant of the problem. First, key properties of optimal solutions are formally proven and efficiently solvable special cases are identified. Then, a detailed investigation of the optimistic and pessimistic variants of the problem is presented. It is demonstrated that the set of optimal consumption schedules typically contains various responses that are equal for the follower, but bring radically different profits for the leader. The main procedure for solving the pessimistic variant reduces the problem to solving the optimistic variant with slightly perturbed problem data. A numerical case study shows that the optimistic solution may perform poorly in practice, while the pessimistic solution gives very close to the highest profit that can be achieved theoretically. To the best of the authors’ knowledge, this paper is the first to propose an exact solution approach for the pessimistic variant of the problem.

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Hanzl, Jiří. "General Application of Multiple Criteria Decision Making Methods for Finding the Optimal Solution in City Logistics." Open Engineering 10, no. 1 (March 10, 2020): 147–53. http://dx.doi.org/10.1515/eng-2020-0023.

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AbstractThe aim of this paper is to familiarize the reader with the general application of MCDM methods on a specific example of City Logistics in order to find the optimal solution for operation of the territory. In its introductory part, methods used for quantitative evaluation of variant solutions are briefly described, and then the so-called Forces Decision Matrix Method (FDMM) including the determination of criteria weights using pairwise comparison of variants according to individual criteria on the specific example is applied. In the final part of the paper, the advantages and disadvantages of using this method for more complex tasks with multiple variant solutions based on the results of the practical example are evaluated and the so-called Saaty’s method based on the quantitative pair-wise comparison to partially eliminate differences in the mutual evaluation of weights and criteria is mentioned.

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Krasuski, Kamil, Damian Wierzbicki, and Mieczysław Bakuła. "Improvement of UAV Positioning Performance Based on EGNOS+SDCM Solution." Remote Sensing 13, no. 13 (July 2, 2021): 2597. http://dx.doi.org/10.3390/rs13132597.

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The article presents the results of research on multi-SBAS (multi-satellite-based augmentation system) positioning in UAV (unmanned aerial vehicle) technology. For this purpose, a new solution was developed for combining the UAV position navigation solution from several SBAS systems. In this particular case, the presented linear combination algorithm is based on the fusion of EGNOS (European geostationary navigation overlay service) and SDCM (system of differential correction and monitoring) positioning to determine the resultant UAV coordinates. The algorithm of the mathematical model uses weights of measurements in three ways, i.e., Variant I, the reciprocal of the number of tracked satellites from a single SBAS solution; Variant II, the inverse square of mean coordinate errors from a single SBAS solution; and Variant III, the reciprocal of UAV flight speed from a single SBAS solution. The research experiment used real GNSS (global navigation satellite system) navigation data recorded by the VTOL unmanned platform. The test flight was made in April 2020 in Poland, near Warsaw. Based on the developed research results, it was found that the highest accuracy of UAV positioning was obtained when using the weighting model for Variant II. In the weight model of Variant II, the accuracy of the solution of the UAV position increased by 1–2% for the horizontal components and 19–22% for the vertical component h, concerning the results obtained from the weighing Variants I and III. It is worth noting that the proposed research model significantly improves the results of determining the ellipsoidal height h. Compared to the arithmetic mean model, determining the h component in the Variant II weight model is improved by about 23%. The paper also shows the advantage of EGNOS+SDCM positioning over EGNOS positioning alone in determining the accuracy of the vertical component h. The obtained research results show the significant advantages of the multi-SBAS positioning model in UAV technology.

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MATHIRAJAN, M., and B. MEENAKSHI. "EXPERIMENTAL ANALYSIS OF SOME VARIANTS OF VOGEL'S APPROXIMATION METHOD." Asia-Pacific Journal of Operational Research 21, no. 04 (December 2004): 447–62. http://dx.doi.org/10.1142/s0217595904000333.

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This paper presents a variant of Vogel's approximation method (VAM) for transportation problems. The importance of determining efficient solutions for large sized transportation problems is borne out by many practical problems in industries, the military, etc. With this motivation, a few variants of VAM incorporating the total opportunity cost (TOC) concept were investigated to obtain fast and efficient solutions. Computational experiments were carried out to evaluate these variants of VAM. The quality of solutions indicates that the basic version of the VAM coupled with total opportunity cost (called the VAM–TOC) yields a very efficient initial solution. In these experiments, on an average, about 20% of the time the VAM–TOC approach yielded the optimal solution and about 80% of the time it yielded a solution very close to optimal (0.5% loss of optimality). The CPU time required for the problem instances tested was very small (on an average, less than 10 s on a 200 MHz Pentium machine with 64 MB RAM).

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Kolpakov, Roman M., and Mikhail A. Posypkin. "Effective parallelization strategy for the solution of subset sum problems by the branch-and-bound method." Discrete Mathematics and Applications 30, no. 5 (October 27, 2020): 313–25. http://dx.doi.org/10.1515/dma-2020-0028.

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AbstractAn easily implementable recursive parallelization strategy for solving the subset sum problem by the branch-and-bound method is proposed. Two different frontal and balanced variants of this strategy are compared. On an example of a particular case of the subset sum problem we show that the balanced variant is more effective than the frontal one. Moreover, we show that, for the considered particular case of the subset sum problem, the balanced variant is also time optimal.

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Bekman, Alexander D., Sergey V. Stepanov, Alexander A. Ruchkin, and Dmitry V. Zelenin. "A new algorithm for finding CRM-model coefficients." Tyumen State University Herald. Physical and Mathematical Modeling. Oil, Gas, Energy 5, no. 3 (October 14, 2019): 164–85. http://dx.doi.org/10.21684/2411-7978-2019-5-3-164-185.

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The quantitative evaluation of producer and injector well interference based on well operation data (profiles of flow rates/injectivities and bottomhole/reservoir pressures) with the help of CRM (Capacitance-Resistive Models) is an optimization problem with large set of variables and constraints. The analytical solution cannot be found because of the complex form of the objective function for this problem. Attempts to find the solution with stochastic algorithms take unacceptable time and the result may be far from the optimal solution. Besides, the use of universal (commercial) optimizers hides the details of step by step solution from the user, for example — the ambiguity of the solution as the result of data inaccuracy. The present article concerns two variants of CRM problem. The authors present a new algorithm of solving the problems with the help of “General Quadratic Programming Algorithm”. The main advantage of the new algorithm is the greater performance in comparison with the other known algorithms. Its other advantage is the possibility of an ambiguity analysis. This article studies the conditions which guarantee that the first variant of problem has a unique solution, which can be found with the presented algorithm. Another algorithm for finding the approximate solution for the second variant of the problem is also considered. The method of visualization of approximate solutions set is presented. The results of experiments comparing the new algorithm with some previously known are given.

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Nechita, Ion, and Jordi Pillet. "SudoQ -- a quantum variant of the popular game." Quantum Information and Computation 21, no. 9-10 (August 2021): 781–99. http://dx.doi.org/10.26421/qic21.9-10-4.

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(pp781-799) doi: https://doi.org/ Abstracts: We introduce SudoQ, a quantum version of the classical game Sudoku. Allowing the entries of the grid to be (non-commutative) projections instead of integers, the solution set of SudoQ puzzles can be much larger than in the classical (commutative) setting. We introduce and analyze a randomized algorithm for computing solutions of SudoQ puzzles. Finally, we state two important conjectures relating the quantum and the classical solutions of SudoQ puzzles, corroborated by analytical and numerical evidence.

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Kvederytė, Artūras. "MULTIPLE CRITERIA MULTIVARIANT DESIGN OF A BUILDING LIFE CYCLE/PASTATO GYVAVIMO PROCESO DAUGIAKRITERINIS ALTERNATYVUSIS PROJEKTAVIMAS." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 6, no. 2 (April 30, 2000): 128–42. http://dx.doi.org/10.3846/13921525.2000.10531576.

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A lot of data had to be processed and evaluated when carrying out multivariant design of a building life cycle. The number of feasible alternatives can be as large as 100,000. Each of the alternatives may be described from various perspectives, eg by conceptual and quantitative information. The problem arises how to perform computer-aided design of the alternative variants based on this enormous amount of information. To solve this problem a new method of multiple criteria multivariant building life cycle design was developed. According to the above method multiple criteria multivariant design is carried out in 5 stages (Fig 1). In order to reduce the amount of information being used in computer-aided multivariant design the codes of the alternative solutions are used. In this case, any i solution of j alternative is given a ij code providing thorough quantitative (system of criteria, units of measure, significances, values, as well as a minimizing or maximizing criterion) and conceptual (text, drawings, graphics, video tapes) information about the alternative being considered (see Table 1). Thus, the use of codes of the alternative solutions in computer-aided multivariant design reduces the volume of information to be processed providing better insight into a physical meaning of computations. Codes, with conceptual and quantitative information provided, are used for describing all available alternative project solutions. The total number of these codes makes the table of codes of building life cycle alternatives more convenient for getting the alternative versions in a more simple way (see Table 1). As can be seen from Table 1, it contains c solutions of a building life cycle (plots, buildings, well-being, maintenance process, etc) of the n i alternative versions codes. Any i line of the code table represents the codes of A i solution a ijalternatives. If the information relating to the solutions in the code table of building life cycle alternatives is represented by codes, then the code contains quantitative and conceptual information (see Table 1). In this case, n i alternatives of any i solution are being considered in developing the alternative versions of a building life cycle. For example, if in determining possible building life cycle alternative versions 10 alternatives are considered for any of 10 solutions, then, according to equation 1 maximum ten billion such variants will be obtained. It is evident that in this and similar cases it is hardly possible and reasonable to analyse all the versions from various perspectives. Therefore, it is advisable to reduce their number as follows. If a project of c solutions having n i alternatives allows k combinations (equation 1) then, by using multiple criteria analysis methods, pmost efficient versions should be chosen from every solution for further consideration (see Table 2). In this way, inefficient variants are being removed. The best solution alternatives obtained are then grouped according to priority considerations. In Table 2 a il is a code of the best variant of i solution, while a ip is a code of its worst version. Then, project variants are being developed based on the efficient p alternatives of c solutions chosen. At the beginning, this process should involve the codes of the alternative solutions. The first building life cycle variant is obtained by analysing the best solution variants according to the priority order (see Table 2 and 3). The last variant is based on solution versions from the bottom of priority table, while intermediate variants are obtained with account of the versions found in the middle of this table. For example, the first building life cycle version is based on a 11 plot, a 21 building, a i1 well-being, a c1 maintenance, etc variants. The last building life cycle version takes into account a 1p plot, a 2p building, a ip well-being, a cp maintenance, etc variants. In this case, combinations are obtained by using p alternatives from any c solutions. While in Table 3 the development of building life cycle alternatives was based on codes of solution alternatives, Table 4 presents conceptual and quantitative information about the variants instead of the codes. When a particular building life cycle is being considered, the values relating to various solutions but based on the same criterion are recalculated into a single reduced value. After the reduction of the same criterion (eg cost, comfortability) values of various solutions (plot, building, well-being, maintenance) to a single one it is necessary to appraise significances of these solutions. For example, noise level within and outside the building is not of the same significance to its inhabitants. The same applies to paying the money (it depends on whether—this should be done at the present moment or in some years). The above significances of the solutions are determined by using expert, financial analysis and other methods. The significances should be made compatible in two directions: horizontally (among criteria) and vertically (among solutions). In this way, Table 4 may be transformed into a summary decision making table (see Table 5) containing all building life cycle versions and overall related information. A new method of multiple criteria multivariant design of a building life cycle enabling the user to make computer-aided design of up to 100,000 alternative project versions was developed. Any building life cycle variant obtained in this way is based on quantitative and conceptual information.

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SOARE, Liliana Cristina, CodruÅ£a-Mihaela DOBRESCU, Monica POPESCU, and Alina Gabriela BOERU. "The Effects of Some Pesticides on Spore Germination and Gametophyte Differentiation in Athyrium filix-femina (L.) Roth. and Polypodium vulgare L." Notulae Botanicae Horti Agrobotanici Cluj-Napoca 41, no. 2 (December 6, 2013): 458. http://dx.doi.org/10.15835/nbha4129088.

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The aim of this study was to assess the effects of a fungicide (copper hydroxide with 50% metallic copper) (Co) and of an insecticide (bifenthrin 100 g/l) (B) on spore germination and gametophyte development in the fern species Athyrium filix-femina (L.) Schott. and Polypodium vulgare L. The experimental variants were: V1Co: 0.1 gr fungicide/100 ml Knop solution, V2Co: 0.2 gr fungicide/100 ml Knop solution, V3Co: 3 gr fungicide/100 ml Knop solution, V1B: 0.01 ml insecticide/100 ml Knop solution, V2B: 0.02 ml insecticide/100 ml Knop solution, V3B: 0.04 ml insecticide/100 ml Knop solution and Control (C): 100 ml Knop solution. Co inhibited spore germination in all the experimental variants tested on the species Athyrium filix-femina. In the V3Co variant, after 24 days, no spore germinated. B also inhibited spore germination in all the experimental variants. In Polypodium vulgare, Co significantly inhibited spore germination. In the experimental variants containing B, only in the V3B variant the germination is significantly inhibited. Calculations showed a significant negative correlation between the germination percentage and the concentration of pesticides. The fungicide also affected gametophyte differentiation, which happened much more slowly in both species. The rhizoids of the gametophytes of Polypodium vulgare showed modifications in their differentiation and morphology that could also be related to alterations in their biochemical composition. The experimental variants with the highest concentration of insecticide resulted in the differentiation of abnormal gametophytes growing in a tridimensional cellular mass with callus morphology. The responses of plants to the induced stress produced during the testing period may be used as biomarkers of environmental pollution caused by pesticides.

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MIYAZAKI, TAKAFUMI. "THE SHUFFLE VARIANT OF JEŚMANOWICZ’ CONJECTURE CONCERNING PYTHAGOREAN TRIPLES." Journal of the Australian Mathematical Society 90, no. 3 (June 2011): 355–70. http://dx.doi.org/10.1017/s1446788711001340.

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AbstractLet (a,b,c) be a primitive Pythagorean triple such that b is even. In 1956, Jeśmanowicz conjectured that the equation ax+by=cz has the unique solution (x,y,z)=(2,2,2) in the positive integers. This is one of the most famous unsolved problems on Pythagorean triples. In this paper we propose a similar problem (which we call the shuffle variant of Jeśmanowicz’ problem). Our problem states that the equation cx+by=az with x,y and z positive integers has the unique solution (x,y,z)=(1,1,2) if c=b+1 and has no solutions if c>b+1 . We prove that the shuffle variant of the Jeśmanowicz problem is true if c≡1 mod b.

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Kumar, Pravesh, Sushil Kumar, Millie Pant, and V. P. Singh. "Interpolation Based Mutation Variants of Differential Evolution." International Journal of Applied Evolutionary Computation 3, no. 4 (October 2012): 34–50. http://dx.doi.org/10.4018/jaec.2012100103.

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Differential evolution algorithm (DE) is an efficient and versatile population-based search technique for global optimization. In this paper, two novel mutation variants for DE are presented. These mutation variants are based on interpolation rules; first variant is based on Inverse Quadratic Interpolation called IQI-DE and the second variant is based on sequential parabolic interpolation called SPI-DE. Both variants aim at efficiently generating the base vector in the mutation phase of DE. The performance of proposed variants is implemented on 12 benchmark problems and compares with basic DE and five other enhanced versions of DE such as DERL, ODE, jDE, JADE, and LeDE. Experimental results show that the proposed variants are significantly better or at least comparable to other variants in term of convergence speed and solution accuracy.

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AKAGI, GORO, and MESSOUD EFENDIEV. "Allen–Cahn equation with strong irreversibility." European Journal of Applied Mathematics 30, no. 04 (July 16, 2018): 707–55. http://dx.doi.org/10.1017/s0956792518000384.

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This paper is concerned with a fully non-linear variant of the Allen–Cahn equation with strong irreversibility, where each solution is constrained to be non-decreasing in time. The main purposes of this paper are to prove the well-posedness, smoothing effect and comparison principle, to provide an equivalent reformulation of the equation as a parabolic obstacle problem and to reveal long-time behaviours of solutions. More precisely, by derivingpartialenergy-dissipation estimates, a global attractor is constructed in a metric setting, and it is also proved that each solutionu(x,t) converges to a solution of an elliptic obstacle problem ast→ +∞.

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Sabir, Kuliyev. "A variant of the polygonal plate oscillation problem solution." Journal of Mechanical Science and Technology 32, no. 4 (April 2018): 1563–67. http://dx.doi.org/10.1007/s12206-018-0310-x.

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Ticha, Šarka, Michal Zelnak, and Jan Vavrina. "Desing of Digital Calliper for Control of Selected Parameters of Railway Wheels." Technological Engineering 11, no. 1 (December 1, 2014): 40–42. http://dx.doi.org/10.2478/teen-2014-0008.

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Abstract This contribution deals with new design of digital calliper for transferring of width dimension scale from the ring interface to tyre of railway wheel. Based on the problem definition were solved variants of design with possibility of improvement current measurement technique. For selected variant of production was developed calibration procedures for ensure of required accuracy. At the end solution that was significantly influenced by economic recession was realized variant for single production. Manufacturer and exclusive supplier of this digital calliper is UNIMETRA Company, Ltd.

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Mali, Amol D., and Minh Tang. "Path-Cost Bounds for Parameterized Centralized Variants of A* for Static and Certain Environments." International Journal on Artificial Intelligence Tools 25, no. 04 (August 2016): 1650028. http://dx.doi.org/10.1142/s0218213016500287.

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A* search and its variants have been used in various fields for solving problems with large search spaces where state transitions occur because of application of operators. The key values in A* search are g(n) and h(n), where g(n) is the cost of the path from root (or start) node to node n, and h(n) is the estimated cost of cheapest path from n to goal. In this paper, we report on a space of variants of A* based on the following ideas: (i) using weighting functions for g(n) and h(n), (ii) evaluating different nodes with different heuristics, (iii) evaluating nodes with computationally cheap heuristics and re-evaluating some nodes with computationally expensive heuristics, and (iv) changing the size of the set of nodes from which the node to be expanded next is selected. We report on the bounds on the costs of solutions found by these variants of A*. We also report on the bounds for meta-variants of A* that invoke these variants sequentially. We show how the results can be used to obtain a more flexible search control without increasing the bound on the cost of the solution found by a variant or a meta-variant.

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Stefanovic, Bogdan, and Ivan Bjelanovic. "Selection of the variant solution of forest road alignment conceptual design using multicriteria optimisation." Bulletin of the Faculty of Forestry, no. 99 (2009): 165–76. http://dx.doi.org/10.2298/gsf0999165s.

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One of the three studied variant solutions of forest road conceptual design was selected based on the linear distribution of criteria, as the method of multicriteria optimization. The selection was performed with 25 parameters classified as economic, technical, production and social criteria. The parameters of technical criteria were grouped into design, construction and building parameters. Based on calculated nominal values of parameters by the given criteria, their ranking, comparison, point rating and scoring, the selected most favorable solution was variant 1.

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Yurtkuran, Alkın, and Erdal Emel. "An Enhanced Artificial Bee Colony Algorithm with Solution Acceptance Rule and Probabilistic Multisearch." Computational Intelligence and Neuroscience 2016 (2016): 1–13. http://dx.doi.org/10.1155/2016/8085953.

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The artificial bee colony (ABC) algorithm is a popular swarm based technique, which is inspired from the intelligent foraging behavior of honeybee swarms. This paper proposes a new variant of ABC algorithm, namely, enhanced ABC with solution acceptance rule and probabilistic multisearch (ABC-SA) to address global optimization problems. A new solution acceptance rule is proposed where, instead of greedy selection between old solution and new candidate solution, worse candidate solutions have a probability to be accepted. Additionally, the acceptance probability of worse candidates is nonlinearly decreased throughout the search process adaptively. Moreover, in order to improve the performance of the ABC and balance the intensification and diversification, a probabilistic multisearch strategy is presented. Three different search equations with distinctive characters are employed using predetermined search probabilities. By implementing a new solution acceptance rule and a probabilistic multisearch approach, the intensification and diversification performance of the ABC algorithm is improved. The proposed algorithm has been tested on well-known benchmark functions of varying dimensions by comparing against novel ABC variants, as well as several recent state-of-the-art algorithms. Computational results show that the proposed ABC-SA outperforms other ABC variants and is superior to state-of-the-art algorithms proposed in the literature.

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Bonmassar, Giorgio, and Eric L. Schwartz. "Representation is space-variant." Behavioral and Brain Sciences 21, no. 4 (August 1998): 469–70. http://dx.doi.org/10.1017/s0140525x98241252.

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Under shift, caused for example by eye movement, or by relative movement of the subject or object of perception, the cortical representation undergoes very large changes in “size” and “shape.” Space-variance of cortical representation rules out models that fundamentally require linear interpolation between shifted patterns (e.g., Edelman's model) or rigid shift of an invariant retinal stimulus corresponding to shift at the cortex (e.g., the shifter theory of van Essen). Recently, a computational solution of “quasi-shift” invariance for space-variant mappings has been constructed (Bonmassar & Schwartz 1997a; 1997b).

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Euchi, Jalel. "Genetic scatter search algorithm to solve the one-commodity pickup and delivery vehicle routing problem." Journal of Modelling in Management 12, no. 1 (February 13, 2017): 2–18. http://dx.doi.org/10.1108/jm2-10-2015-0077.

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Purpose In this paper, the author introduces a new variant of the pickup and delivery transportation problem, where one commodity is collected from many pickup locations to be delivered to many delivery locations within pre-specified time windows (one–to many–to many). The author denotes to this new variant as the 1-commodity pickup-and-delivery vehicle routing problem with soft time windows (1-PDVRPTW). Design/methodology/approach The author proposes a hybrid genetic algorithm and a scatter search to solve the 1-PDVRPTW. It proposes a new constructive heuristic to generate the initial population solution and a scatter search (SS) after the crossover and mutation operators as a local search. The hybrid genetic scatter search replaces two steps in SS with crossover and mutation, respectively. Findings So, the author proposes a greedy local search algorithm as a metaheuristic to solve the 1-PDVRPTW. Then, the author proposes to hybridize the metaheuristic to solve this variant and to make a good comparison with solutions presented in the literature. Originality/value The author considers that this is the first application in one commodity. The solution methodology based on scatter search method combines a set of diverse and high-quality candidate solutions by considering the weights and constraints of each solution.

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Avetisyan, G. A., and T. V. Avetisyan. "INFLUENCE OF MICROELEMENT MANGANESE ON RESISTANCE OF SOFT WHEAT TO POWDERY MILDEW." Bulletin of the State Nikitsky Botanical Gardens 1, no. 138 (May 14, 2021): 134–38. http://dx.doi.org/10.36305/0513-1634-2021-138-134-138.

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The effect of microelement manganese top-dressing on resistance of soft wheat to powdery mildew № pathogen was studied. То study the effect of the element manganese on the development of the pathogen, wheat seedlings were fed with а 0,2% solution of КМn04. Infected plants not fed with the test solution served as control.Observations on the intensity of germination of conidia of the powdery mildew pathogen on wheat leaves showed that the spomlation of conidia in the variant with feeding with 0,2% КМn04 solution was lower than in the control variant. We found that in the control variant without the use of а КМn04 solution, the colonies of powdery mildew fungus were characterized Ьу abundant spomlation, the formation of а halo was observed. In the experimental variant the growth and reproduction of conidia proceeded more slowly and halos were not noticeaЫe. In this study in the control variant ofthe experiment, the predominance of conidial chains in the colonies ofthe powdery mildew pathogen was noted in comparison with the variant with feeding.Thus, it was found that feed solution of0,2% КМn04 leads to а decrease in the formation of appressoria and the number of visiЫe colonies of the powdery mildew pathogen on wheat leaves. The presented results confIГm that top-dressing with microelement manganese enhances resistance ofwheat against powdery mildew.

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Hanna, M., J. Schwenke, and D. Krause. "INCONSISTENCY MANAGEMENT FOR PRODUCT FAMILIES WITH MANY VARIANTS THROUGH A MODEL-BASED APPROACH IN MODULAR LIGHTWEIGHT DESIGN." Proceedings of the Design Society: DESIGN Conference 1 (May 2020): 917–26. http://dx.doi.org/10.1017/dsd.2020.309.

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AbstractIn methodical product development, numerous data are used and linked with each other, especially variant-related data. This paper presents a model-based solution for avoiding inconsistencies in the development of product families with many variants and extends it to modular lightweight design. In addition, the inconsistencies in methodical product development were classified and solution approaches were shown. Thus, inconsistencies can be avoided with the presented elaborated data model for an integrated product and process model based on the presented procedure.

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Sůra, Miroslav. "Linking together independent building development plans." MATEC Web of Conferences 279 (2019): 01006. http://dx.doi.org/10.1051/matecconf/201927901006.

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The article describes two independent projects having investors of two different types – one using public money for the benefit of community, the other was purely private money of a private economic operator. Both investors included the green and/or sustainability building objectives in their projects, and examined possible defects and deficits in thereof, also in relation to the surrounding conditions and processes. Of course, each investor discovered the concurrent development of the other investor’s plans, and determined overlapping areas of interest. In the article we describe the overlapping interest areas, variant solutions intended to lower projects costs, other pros and cons of the variants, their possible advantages and prospective degrading defects, and the harmonization of both investors’ requirements. Next to this, public opinion on the solution was determined and evaluated, with trends and biases where identifiable. Then the variant best suited to both investors was agreed upon, just with slight final modifications to better satisfy the public and both investors, and to avoid possible future induced defects.

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Vesković, Slavko, Željko Stević, Darjan Karabašević, Snježana Rajilić, Sanjin Milinković, and Gordan Stojić. "A New Integrated Fuzzy Approach to Selecting the Best Solution for Business Balance of Passenger Rail Operator: Fuzzy PIPRECIA-Fuzzy EDAS Model." Symmetry 12, no. 5 (May 5, 2020): 743. http://dx.doi.org/10.3390/sym12050743.

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The analysis of operations of the passenger traffic operator in the Republic of Srpska (RS) showed that the volume of passenger transport has, for the last fifteen years, been in constant decline. It is of particular importance that the operator has, year after year, recorded a negative balance of business. The way out of the current unfavorable situation in the sector of passenger traffic is based on the application of Public Service Obligation (PSO) based on the Regulation 1370/2007. In order to solve the problems, seven realistically possible variants have been identified. This paper defines the criteria for selecting the best variant, as well as a new integrated fuzzy model for the selection of the best variant that will enable the operator to make a profit. To define the weights of criteria in this paper, we have used the fuzzy PIvot Pairwise RElative Criteria Importance Assessment (F-PIPRECIA) method, while for ranking and selection of the best variant, we have used the Fuzzy Evaluation based on Distance from Average Solution (F-EDAS) method. Results show that the seventh variant: “Increase in revenue from ticket sales and PSO services and reduction in costs“ is the best solution in current conditions. Validation tests are performed with different scenarios and approaches and show that the model is stable. A validity test was created consisting of variations in the significance of model input parameters, testing of reverse rank, applying the fuzzy Measurement Alternatives and Ranking according to the COmpromise Solution (F-MARCOS), fuzzy Simple Additive Weighing (F-SAW) method, and fuzzy Technique for Order of Preference by Similarity to Ideal Solution (F-TOPSIS). As a part of the validation tests, Spearman’s coefficient of correlation (SCC) in some scenarios is performed and weights of the criteria have been obtained using the Fuzzy Analytic Hierarchy Process (F-AHP) and Full Consistency Method (FUCOM).

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Bortnowski, Piotr, Lech Gładysiewicz, Robert Król, and Maksymilian Ozdoba. "Energy Efficiency Analysis of Copper Ore Ball Mill Drive Systems." Energies 14, no. 6 (March 23, 2021): 1786. http://dx.doi.org/10.3390/en14061786.

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Milling is among the most energy-consuming technological stages of copper ore processing. It is performed in mills, which are machines of high rotational masses. The start of a mill filled to capacity requires appropriate solutions that mitigate the overloading. One method for increasing the energy efficiency of ball mills is to optimize their drive systems. This article looks at two variants of drive systems with efficiencies higher than the already existing solutions. The first variant is a low-speed synchronous motor with permanent magnets without a gearbox, and the second variant is an asynchronous high-efficiency motor with a gearbox and a fluid coupling. The energy performance analysis of the three solutions was based on the average energy consumption indicator per mass unit of the milled material and on the energy consumption per hour. The investigations required models of the drive systems and analyses with the use of the Monte Carlo methods. The highest energy efficiency is observed in the case of the solution based on the permanent magnet motor. However, the drive system with the high-speed motor offers a gentle start-up possibility owing to the fluid coupling.

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Yıldırım, Ümit, and Yusuf Kuvvetli. "Solution of capacitated vehicle routing problem with invasive weed and hybrid algorithms." International Journal of Industrial Engineering Computations 12, no. 4 (2021): 441–56. http://dx.doi.org/10.5267/j.ijiec.2021.4.002.

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The vehicle routing problem is widespread in terms of optimization, which is known as being NP-Hard. In this study, the vehicle routing problem with capacity constraints is solved using cost- and time-efficient metaheuristic methods: an invasive weed optimization algorithm, genetic algorithm, savings algorithm, and hybridized variants. These algorithms are tested using known problem sets in the literature. Twenty-four instances evaluate the performance of algorithms from P and five instances from the CMT data set group. The invasive weed algorithm and its hybrid variant with savings and genetic algorithms are used to determine the best methodology regarding time and cost values. The proposed hybrid approach has found optimal P group problem instances with a 2% difference from the best-known solution on average. Similarly, the CMT group problem is solved with about a 10% difference from the best-known solution on average. That the proposed hybrid solutions have a standard deviation of less than 2% on average from BKS indicates that these approaches are consistent.

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Wang, Xinning, Chong Li, Dalei Song, and Robert Dean. "A Nonlinear Circuit Analysis Technique for Time-Variant Inductor Systems." Sensors 19, no. 10 (May 20, 2019): 2321. http://dx.doi.org/10.3390/s19102321.

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Time-variant inductors exist in many industrial applications, including sensors and actuators. In some applications, this characteristic can be deleterious, for example, resulting in inductive loss through eddy currents in motors designed for high efficiency operation. Therefore, it is important to investigate the electrical dynamics of systems with time-variant inductors. However, circuit analysis with time-variant inductors is nonlinear, resulting in difficulties in obtaining a closed form solution. Typical numerical algorithms used to solve the nonlinear differential equations are time consuming and require powerful processors. This investigation proposes a nonlinear method to analyze a system model consisting of the time-variant inductor with a constraint that the circuit is powered by DC sources and the derivative of the inductor is known. In this method, the Norton equivalent circuit with the time-variant inductor is realized first. Then, an iterative solution using a small signal theorem is employed to obtain an approximate closed form solution. As a case study, a variable inductor, with a time-variant part stimulated by a sinusoidal mechanical excitation, is analyzed using this approach. Compared to conventional nonlinear differential equation solvers, this proposed solution shows both improved computation efficiency and numerical robustness. The results demonstrate that the proposed analysis method can achieve high accuracy.

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Gil', M. I. "Solution estimates for abstract nonlinear time-variant differential-delay equations." Journal of Mathematical Analysis and Applications 270, no. 1 (June 2002): 51–65. http://dx.doi.org/10.1016/s0022-247x(02)00044-6.

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EL-Fassi, Iz-iddine, Abdellatif Chahbi, and Samir Kabbaj. "The solution of a generalized variant of d’Alembert’s functional equation." Boletín de la Sociedad Matemática Mexicana 24, no. 2 (May 9, 2017): 463–69. http://dx.doi.org/10.1007/s40590-017-0168-4.

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Zhang, Yongbo, Wieslaw Swietnicki, Michael G. Zagorski, Witold K. Surewicz, and Frank D. Sönnichsen. "Solution Structure of the E200K Variant of Human Prion Protein." Journal of Biological Chemistry 275, no. 43 (August 22, 2000): 33650–54. http://dx.doi.org/10.1074/jbc.c000483200.

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Gurnett, Anne M., Jayne Raper, and Mervyn J. Turner. "Solution properties of the variant surface glycoprotein of Trypanosoma brucei." Molecular and Biochemical Parasitology 18, no. 2 (February 1986): 141–53. http://dx.doi.org/10.1016/0166-6851(86)90034-4.

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41

Hayashi, Yoshio. "A solution method for a knapsack problem and its variant." Japan Journal of Applied Mathematics 3, no. 1 (June 1986): 73–91. http://dx.doi.org/10.1007/bf03167093.

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42

Bira, Bibekananda, Hemanta Mandal, and Dia Zeidan. "Exact solution of the time fractional variant Boussinesq-Burgers equations." Applications of Mathematics 66, no. 3 (March 17, 2021): 437–49. http://dx.doi.org/10.21136/am.2021.0269-19.

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Eliseeva, Olga V., Alexander F. Eliseev, and Sergey L. Belopukhov. "Investigation of the chemical composition of turnip treated with sodium selenite by atomic absorption spectroscopy." Butlerov Communications 63, no. 7 (July 31, 2020): 106–10. http://dx.doi.org/10.37952/roi-jbc-01/20-63-7-106.

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The paper presents data on the study of the chemical composition of Petrovskaya turnip variety when using non-root treatment of vegetating plants with a selenium-containing solution. Treatment of plants was carried out with a solution of sodium selenite with a concentration of 0.0005 and 0.001% by Se. The experiment was carried out according to the following scheme: 1) NPK (background) – control variant; 2) NPK + NRT Se 0.0005%; 3) NPK + NRT Se 0.001%. As a background macro fertiliser, nitroammophosca was added to the soil at the rate of 30 g/m2. In the background options the treatment of plants was carried out with distilled water. The content of selenium in turnip roots was determined by atomic absorption spectroscopy. It is shown that when treated with a solution of sodium selenite, the selenium content in the product part of plants in the variant of NPK + Se 0.0005% increased by 1.5 times, and in the variant of NPK + Se 0.001% – by 1.8 times compared to the control variant. It was found that non-root treatment of vegetating plants with selenium-containing solution led to a decrease in the content of dry matter in turnip roots by 1.5-1.6%, and the content of dry soluble substances remained at the level of the control variant. At the concentration of selenium in the 0.0005% solution, the content of ascorbic acid in root crops decreased by 7%, and the content of nitrates increased by 10.1% relative to the control variant. An increase in the concentration of selenium in the 0.001% solution led to a decrease in the content of ascorbic acid in root crops by 15.9% and an increase in the content of nitrates in them by 20.6% compared to the control variant.

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Janušaitis, Rytis. "ESTIMATION OF ALTERNATIVE WALL INSULATING SOLUTIONS USING THE METHOD OF TECHNOLOGICAL NETWORK MODEL “CUTTING OUT” JUNCTIONS/SIENŲ ŠILTINIMO ALTERNATYVIŲ SPRENDIMŲ ĮVERTINIMAS, TAIKANT TECHNOLOGINIO TINKLINIO MODELIO MAZGŲ “IŠPJOVIMO” METODĄ." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 4, no. 2 (June 30, 1998): 161–70. http://dx.doi.org/10.3846/13921525.1998.10531397.

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The article investigates the problem of the dwelling house wall insulation of many-variant decisions estimation. At present multi-criteria evaluation methods are used. They provide the formal algorithm of the final effective selection of solution. However, during the optimisation of the decisions it is expedient to analyse the efficiency of intermediate decisions and those influencing the final findings. With that end in view the author suggests the multi- criteria problem of the evaluations of the variant decision using the method or technological network model of “cutting out” junctions. The main points of this method are: To cut out a comparable variant junction. Comparable variant junction is such a junction that contains at least two technological process variants. To determine comparable partial processes to the junction. To carry out a multi-criteria evaluation. To eliminate non-rational variants from further calculations. To pick out the most effective decision for the junction. From such decisions the complex process variants of wall insulation are made and multi-criteria evaluation is repeated. This method increases the abilities to raise the number of the partial alternative decisions for establishing the effectiveness ot the intermediate decisions, to receive and verify quickly final results of the decision evaluation and to decrease the amount of the calculations. “Cutting out” junction method can be used for estimating the decisions of building thermal renovation at the designing stage.

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Derouin, T. A., C. D. E. Lakeman, X. H. Wu, J. S. Speck, and F. F. Lange. "Effect of lattice mismatch on the epitaxy of sol-gel LiNbO3 thin films." Journal of Materials Research 12, no. 5 (May 1997): 1391–400. http://dx.doi.org/10.1557/jmr.1997.0189.

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A solution precursor method based on metal alkoxides was used to produce epitaxial LiNbO3 thin films, ≈200 nm thick, on (0001) sapphire substrates. Transmission electron. microscopy revealed that the major cause of surface roughness in these films was grain boundary grooves between mosaic grains with misorientations ≤5°. It is postulated that these low angle boundaries directly result in surface grooving and roughness. The epitaxial films also contained two distinguishable variants in the film/substrate interfacial plane, namely, an aligned variant, and a 60° rotated variant, . A seeded grain growth method was used to minimize the presence of the 60° rotated variant. An epitaxial buffer layer of Fe2O3 was used to lower the mismatch strain, eliminate the 60° rotated variant, and reduce the mosaic nature of the LiNbO3 film. X-ray rocking curve full-width-at-half-maximum (FWHM) values measured on the film peak indicate that the mosaic character can be reduced from 1.5° to 0.76° by using a buffer layer.

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Gorgoi, Mircea, and Corneliu Neagu. "Modeling and Simulation of Holonic Meta-Algorithm in Scheduling Process Using PERT Technique − Optimization in Job Shop Scheduling Problem." Applied Mechanics and Materials 760 (May 2015): 199–204. http://dx.doi.org/10.4028/www.scientific.net/amm.760.199.

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In generally scheduling can be viewed as optimization, bound by sequence and resource constrain and the minimization of the makespan is often used as the criterion. In this paper minimization of the makespan or complete time will be used such as an objective function and not the criterion of the decision. The new approach use heuristic elementary priority dispatch rules as the criterion of the decision. This research purpose a new methodology which use a specific elements of PERT techniques to find the optimum solution. New approach establish a solution's space where are find the all solution of the problem. Determination of the solution's space is realized by a meta-algorithm which take in account all the variant of the solutions of the process.

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Ducsay, L., and O. Ložek. "Effect of topdressing with nitrogen on the yield and quality of winter wheat grain." Plant, Soil and Environment 50, No. 7 (December 10, 2011): 309–14. http://dx.doi.org/10.17221/4037-pse.

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Small-plot field experiments were established in the first decade of October at the Plant Breeding Station of Sládkovičovo-Nový dvor with winter wheat (Triticum aestivum L.), variety Astella. There was investigated an effect of topdressing with nitrogen on the yield of winter wheat grain and its quality characteristics in the experiment. Nitrogenous fertilizers were applied at the growth phase of the 6th leaf (Zadoks = 29). Soil of the experimental stand was analysed for inorganic nitrogen content (Nan) down to the depth of 0.6 m of soil profile. Productive nitrogen fertilizing rate was computed to ensure Nan content in soil on the level of 120 and140 kg N/ha, respectively. Three various forms of fertilizers were examined, urea solution, ammonium nitrate with dolomite, and DAM-390. Different weather conditions statistically highly, significantly influenced grain yield in respective experimental years. Topdressing with nitrogen caused a statistically highly significant increase of grain yield in all fertilized variants ranging from +0.35 to +0.82 t/ha according to respective treatments. Average grain yield in unfertilised control variant represented 7.23 t/ha. Nitrogen nutrition showed a positive effect on the main macroelements offtake (N, P, K, Ca, Mg, S) by winter wheat grain in all fertilized variants. Nitrogen fertilizing to the level of 140 kg/ha N in soil positively influenced formation of wet gluten and crude protein with highest increment in variant 5 (solution of urea) representing +12.8 and +10.7%, respectively in comparison to control unfertilised variant as well as to variant 2 (solution of urea and fertilizing on the level of120 kg N/ha) where increments represented +8.8 and 9.7%, respectively. Thousand-kernel weight, volume weight and portion of the first class grain were not markedly influenced by nitrogen fertilizing.

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Dobra, Andreea. "Tools Management Solution for Small Enterprises." Advanced Materials Research 748 (August 2013): 1194–97. http://dx.doi.org/10.4028/www.scientific.net/amr.748.1194.

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The paper proposes a variant of barcode facility using in tools management process in small enterprises. This is justified because existing software are expensive or the module must be modify according with the enterprises profile. By using MS Office – Excel with Visual Basic for Application, it was create a flexible application.

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Subhaschandra Singh, Salam. "Dark soliton solutions to (2 + 1)-dimensional Kundu-Mukherjee-Naskar equation via the first integral method." International Journal of Physical Research 8, no. 2 (September 2, 2020): 40. http://dx.doi.org/10.14419/ijpr.v8i2.30990.

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In the present work, the First Integral Method is being applied in finding a non-soliton as well as a soliton solution of the ( 2 + 1 ) dimensional Kundu-Mukherjee-Naskar (KMN) equation which is a variant of the well-known Nonlinear Schrodinger ( NLS ) equation. Using the method, a dark optical soliton solution and a periodic trigonometric solution to the KMN equation have been suggested and the relevant conditions which guarantee the existence of such solutions are also indicated therein.

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Konieczny, Jarosław, and Zbigniew Rdzawski. "Forming of the Structure and Functional Properties of the Precipitation-Strengthened CuNi2Si1 Alloy." Solid State Phenomena 275 (June 2018): 100–112. http://dx.doi.org/10.4028/www.scientific.net/ssp.275.100.

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The work presents the results on the structure of CuNi2Si1 copper alloy. The alloy was treated in two variants: supersaturation - aging (variant I) and supersaturation - cold rolling - aging (Variant II).The structure of the CuNi2Si1 alloyed copper were analyzed by high resolution transmission electron microscopy (HRTEM). The TEM investigation showed in the Cu matrix after applying cold rolling after solution heat treatment, during aging at 600°C, causes the Ni2Si phase occurrence immediately after the begin of aging. Cold rolling (50% reduction) of the CuNi2Si1 alloy after supersaturation changes the mechanism and kinetics of precipitation and provides possibilities for production of broader sets of functional properties.

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Journal articles on the topic 'Variant solution'

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