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Journal articles on the topic 'Area solved'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

Cherdantsev, N. V., and S. V. Cherdantsev. "Stress State of Layered Rock Mass Containing A Mine Working of Round Cross-section." Occupational Safety in Industry, no. 10 (October 2024): 14–20. http://dx.doi.org/10.24000/0409-2961-2024-10-14-20.

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The elastoplastic problem of the stress state of layered rock mass containing an extended single mine working is solved in the following sequence. A stress field is built in the parts of mass adjacent directly to the mine working that form an extremely stressed area (the area of inelastic deformations). Then the area is spread into the rock mass, and the stress field is built in it in accordance with the characteristics method developed by V.V. Sokolovsky to be applied to the calculation of granular and coherent media. The method has been developed to solve problems of differential equations o

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2

Bosák, Lukáš, and Milan Palko. "Energy Saving Building in Mountain Area." Advanced Materials Research 1057 (October 2014): 27–34. http://dx.doi.org/10.4028/www.scientific.net/amr.1057.27.

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The main intention of this report is solution of energy-saving building in mountain area, which uses the resources of the natural environment. It is the building of the mountain hotel in this concrete case. Firstly, there is solved the energy concept of the building which uses natural resources. There is also described the design of a building, which is designed in an overwhelming majority as a wooden building. The constructions are handled with an aspect of their thermal properties. There has been solved the thermal analysis of the major structural compositions. The connections between compos

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Rymarczyk, Tomasz, and Przemysław Adamkiewicz. "NONDESTRUCTIVE METHOD TO DETERMINE MOISTURE AREA IN HISTORICAL BUILDING." Informatics Control Measurement in Economy and Environment Protection 7, no. 1 (2017): 68–71. http://dx.doi.org/10.5604/01.3001.0010.4586.

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This paper presents a nondestructive method of brick wall dampness testing in real building structures. The proposed algorithm was used to determine the moisture of test brick walls on the specially models. The finite element method has been used to solve the forward problem. The algorithm is initialized by using one step methods and topological sensitivity analysis. There was constructed the forward model and solved the inverse for visualization of moisture inside objects.

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Di, Li Ming, Chun Jing Yang, and Yong Sheng Zhao. "Mathematical Model for Closed-Form Solution of Parameters of Cylinder Exhaust Port in Variable-Stroke Engine." Advanced Materials Research 97-101 (March 2010): 2724–27. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.2724.

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A mathematical model for getting the closed-form solution of main parameters of cylinder exhaust port is present, based on a few known parameters of variable-stroke engine (VSE). Considering lack of parameters in the initial stage of design, empirical formula is applied to solve the initial specific time-area value of exhaust port, and the initial port timing angle is solved by using logarithmic alignment method, thereby height and width of the exhaust port can be solved, then the precise specific time-area value and port timing angle are solved by using the coefficient calculation method and

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Klabusayová, Eva, Jozef Klučka, Milan Kratochvíl, et al. "Airway Management in Pediatric Patients: Cuff-Solved Problem?" Children 9, no. 10 (2022): 1490. http://dx.doi.org/10.3390/children9101490.

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Traditionally, uncuffed tubes were used in pediatric patients under 8 years in pursuit of reducing the risk of postextubation stridor. Although computed tomography and magnetic resonance imaging studies confirmed that the subglottic area remains the narrowest part of pediatric airway, the use of uncuffed tubes failed to reduce the risk of subglottic swelling. Properly used cuffed tubes (correct size and correct cuff management) are currently recommended as the first option in emergency, anesthesiology and intensive care in all pediatric patients. Clinical practice particularly in the intensive

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Lobaty, A. A., Y. F. Yatsyna, V. Y. Stepanov, and A. Y. Bumai. "Probabilistic analysis of getting into in restricted area by unmanned aerial vehical." «System analysis and applied information science», no. 4 (December 30, 2019): 46–54. http://dx.doi.org/10.21122/2309-4923-2019-4-46-54.

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The probabilistic analysis of crossing by an unmanned aerial vehicle (UAV) of the boundary of the no-fly area is solved. Condition of stating of the fact of the violation of the boundary of the restricted area is to stand of UAV within the area during a specified time. The substantiation of the mathematical model to research through linearized vector stochastic equation is carried out. The problem is solved by applying the theory of Markov processes of random structure with absorption of realizations at the boundary of a given area. Particularity of the approach is the contemporaneously consid

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Narasimhan, Harikrishna, and Shivani Agarwal. "Support Vector Algorithms for Optimizing the Partial Area under the ROC Curve." Neural Computation 29, no. 7 (2017): 1919–63. http://dx.doi.org/10.1162/neco_a_00972.

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The area under the ROC curve (AUC) is a widely used performance measure in machine learning. Increasingly, however, in several applications, ranging from ranking to biometric screening to medicine, performance is measured not in terms of the full area under the ROC curve but in terms of the partial area under the ROC curve between two false-positive rates. In this letter, we develop support vector algorithms for directly optimizing the partial AUC between any two false-positive rates. Our methods are based on minimizing a suitable proxy or surrogate objective for the partial AUC error. In the

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Zemanek, Holger. "COMPETITIVENESS WITHIN THE EURO AREA: THE PROBLEM THAT STILL NEEDS TO BE SOLVED." Economic Affairs 30, no. 3 (2010): 42–47. http://dx.doi.org/10.1111/j.1468-0270.2010.02020.x.

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9

Ma, Dian Guang, Xin Liu, Jia Qiang Zhao, Xiao Fei Liu, and Shao Xi Li. "The Research of Navigation Flow Conditions and Improvement Measures on Entrance Area and Connecting Reach of Dahua Lock in Hongshui River." Advanced Materials Research 250-253 (May 2011): 3624–29. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.3624.

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The ship facilities didn’t be constructed in step with the construction of Dahua Terminal in Hongshui River of Guangxi province, while the argumentation didn’t be carried out when navigation lock was built out. In the condition above, when the navigation lock was completed, the navigation flow conditions in the entrance area of downstream and the linkage section was bad, so ships were difficult to enter the approach channel. The research of navigation flow conditions and nay navigation mechanism in the entrance area of downstream and the linkage section in current condition was implemented thr

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10

Juárez-Ruiz, Estela, and Josip Sliško. "Students’ Epistemological Framings When Solving an Area Problem of a Degenerate Triangle: The Influence of Presence and Absence of a Drawing." Education Sciences 14, no. 3 (2024): 224. http://dx.doi.org/10.3390/educsci14030224.

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This study explores the epistemological framings of undergraduate students when solving an area problem of a degenerate triangle, without or with a triangle drawing. Through mixed research with a triangulation design, the resolution processes and responses of students were analyzed. The aim was to analyze how students’ epistemological framing changes during the problem-solving process depending on whether the task contains the drawing of the triangle or not. Quantitative results show significant differences between students who solve the problem without a triangle drawing and those who do. Qua

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Rocha, Raíssa Liz Alves, Leonardo Costa Teixeira, Marco Aurélio de Souza Vasconcelos, Max Filipe Silva Gonçalves Msc., and Marcos Wagner Jesus Servare Junior Msc. "THE CHALLENGE OF REVERSE LOGISTICS FOR E-WASTE IN BRAZIL – A CASE STUDY IN ELECTRONIC COMPONENTS INDUSTRY." South American Development Society Journal 06, no. 18 (2020): 226–40. https://doi.org/10.24325/issn.2446-5763.v6i18p226-240.

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Waste of Electronics (E-waste) or electrical and electronic equipments (WEEE) is an important strategic issue due to its impact on environment. The disposal became more important when the government creates law to force the logistic reverser of their goods to an appropriate disposal with the objective of encouraging the return in the reverse chain and, thus, motivated the growth of the research field of reverse logistics for environmental issues. Furthermore, the world growth of the consumption of these goods causes the emergence of a paradigm related to the end of the useful life or the end o

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Hicks, James E., and Mounir M. Abdel-Aal. "Maximum Likelihood Estimation for Combined Travel Choice Model Parameters." Transportation Research Record: Journal of the Transportation Research Board 1645, no. 1 (1998): 160–69. http://dx.doi.org/10.3141/1645-20.

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Equilibrium models of combined location and travel choices solve for the modal link flow pattern, which simultaneously solves a constrained minimization problem and satisfies a set of equilibrium conditions characterizing a rational behavior for traveler choices in an urban transportation system. The minimization problem typically is made to be representative of the particular urban area being studied by including coefficients of travel costs and travel choices that have been estimated from locally available observed data. For large urban areas, in practice, it is possible to derive interzonal

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Kurennov, Sergey, Kostiantyn Barakhov, and Hanna Barakhova. "Application of Bezier curves for description of structure shape in optimization of adhesive joints." System research and information technologies, no. 2 (June 30, 2023): 127–38. http://dx.doi.org/10.20535/srit.2308-8893.2023.2.09.

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The problem of topological optimization of a symmetrical double-shear adhesive joint has been solved. The suggested mathematical model of a joint with variable thickness generalizes the classic Holland–Reissner model. The shape of the doubler is described by means of the Bezier curve. Seeking parameters in the optimization problem are coordinates of reference points of the Bezier curve. Both joint length and doubler cross-section area can be considered an objective function. The restriction is applied on stress in adhesive film and doubler. The direct problem of finding the joint stress state

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Kheylo, S. V., O. A. Garin, S. V. Palochkin, and S. D. Dorofeev. "THE PROPERTIES OF THE MECHANISMS WITH SIX DEGREES OF FREEDOM." Spravochnik. Inzhenernyi zhurnal, no. 288 (March 2021): 28–33. http://dx.doi.org/10.14489/hb.2021.03.pp.028-033.

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Parallel mechanisms analysis and design are the main trends of advance robotic engineering. This article is devoted to the novel parallel mechanisms with six degrees of freedom. The presented mechanisms can be applied in additive technologies, robotic–assisted surgery. The proposed mechanisms contain six drives and six kinematic chains. They have the properties of a partial kinematic decoupling, which allows realized separately translational and rotational movements. The presented mechanisms is a simple kinematic scheme. The drives can provide a ratio 1:1 of with the movement of the output lin

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KRAMAR FIJAVŽ, MARJETA, MITJA LAKNER, and MARJETA ŠKAPIN RUGELJ. "AN EQUAL-AREA METHOD FOR SCALAR CONSERVATION LAWS." ANZIAM Journal 53, no. 2 (2011): 156–70. http://dx.doi.org/10.1017/s1446181112000065.

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AbstractWe study the one-dimensional conservation law. We use a characteristic surface to define a class of functions, within which the integral version of the conservation law is solved in a simple and direct way. A simple algorithm for computing the unique solution is developed. The method uses the equal-area principle and yields the solution for any given time directly.

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Curtin, Daniel J. "The Surface Area of a Scalene Cone as Solved by Varignon, Leibniz, and Euler." Euleriana 1, no. 1 (2021): 10. http://dx.doi.org/10.56031/2693-9908.1006.

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Ri, Phyong. "Evaluation Method for Industrial Concentration District in The Area." International Journal of Architecture and Urbanism 7, no. 2 (2023): 251–61. http://dx.doi.org/10.32734/ijau.v7i2.13508.

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In areal scope, certain concentration of industry brings positive effects that raise the effectiveness of regional economic development, but it also results in various negative aftereffects such as ecological environmental destruction in the area when it is over certain limit. Furthermore, it loses dominance of the economic geographical location of the area and causes serious loss from the state viewpoint by resulting the problem of industrial relocation in the economic geographical space. In this paper, we solved methodological problem of evaluating industrial concentration district in the ar

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18

Wu, Longchi. "Feasibility Analysis of Soft Water Cellar in Dryland Area." Academic Journal of Science and Technology 3, no. 3 (2022): 15–17. http://dx.doi.org/10.54097/ajst.v3i3.2527.

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During the construction of high standard farmland, by introducing new software rainwater harvesting cellar technology, combining big data and intelligence, laying drip irrigation belts and other field facilities in the field, efficient water-saving irrigation was realized according to local conditions, and the problem of supplementary irrigation in key growth periods of agricultural production was solved.

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19

Wei, Qing, and Hong Yan Ma. "The Dividing Area Control of Lighting System." Applied Mechanics and Materials 330 (June 2013): 587–91. http://dx.doi.org/10.4028/www.scientific.net/amm.330.587.

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The lighting system is an integral part of the whole building. Lighting control system is an important part of the lighting system and lighting design. As increasingly severe of the energy issues, energy saving has become one of the problems to be solved in the lighting control system. This paper takes a normally used office as an example. Control the blinds and the lamps in the office reasonably. On the premise of the full use of daylight, make the office achieve the most comfortable illumination by using artificial lighting supplies.

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20

Onikienko, V. V., and L. M. Yemelyanenko. "Nation social capital: methodological problems of the economic interaction area study." Ukrainian Society 30, no. 3 (2009): 72–82. http://dx.doi.org/10.15407/socium2009.03.072.

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In the article the challenging methodological problems concerning determination of socioeconomic content of the nation’s social capital category, development of methodological principles and logically structured scheme devoted Ukraine’s up-to-date social capital in context of economical interaction spheres research shaping are solved.

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21

Wang, Yao, Yongkang Shi, and Yunhui Liu. "Research on improved genetic simulated annealing algorithm for multi-UAV cooperative task allocation." Journal of Physics: Conference Series 2246, no. 1 (2022): 012081. http://dx.doi.org/10.1088/1742-6596/2246/1/012081.

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Abstract In order to solve the cooperative search problem of multiple unmanned aerial vehicles (multi-UAVs) in a large-scale area, we propose a genetic algorithm (GA) incorporating simulated annealing (SA) for solving the task region allocation problem among multi-UAVs on the premise that the large area is divided into several small areas. Firstly, we describe the problem to be solved, and regard the task areas allocation problem of multi-UAVs as a multiple traveling salesman problem (MTSP). And the objective function is established under the premise that the number of task areas to be searche

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Wang, Shuaian, Ran Yan, Lingxiao Wu, and Dong Yang. "Optimal re-allocation of mooring areas for yachts." Maritime Business Review 4, no. 1 (2019): 94–105. http://dx.doi.org/10.1108/mabr-11-2018-0045.

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Purpose The purpose of this study is to propose a mathematical optimization model to solve the yacht mooring area re-allocation problem (YMARP). The objective of the problem is to allow the maximum number of yachts to be moored at their ideal mooring areas. Design/methodology/approach In this paper, the YMARP is introduced, formally defined and discussed. The authors develop a 0-1 integer programing optimization model for the problem, which can be solved efficiently using off-shelf solvers. The performance of the model is tested on extensive numerical experiments. Findings The results of the n

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23

Walker, Violet, Fernando Vanegas, and Felipe Gonzalez. "Multi-UAV Mapping and Target Finding in Large, Complex, Partially Observable Environments." Remote Sensing 15, no. 15 (2023): 3802. http://dx.doi.org/10.3390/rs15153802.

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Coordinating multiple unmanned aerial vehicles (UAVs) for the purposes of target finding or surveying points of interest in large, complex, and partially observable environments remains an area of exploration. This work proposes a modeling approach and software framework for multi-UAV search and target finding within large, complex, and partially observable environments. Mapping and path-solving is carried out by an extended NanoMap library; the global planning problem is defined as a decentralized partially observable Markov decision process and solved using an online model-based solver, and

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Oladejo, K. A., D. A. Adetan, and O. A. Bamiro. "A Software Tool for Determining Steady-State Temperature Distributions in a Square Domain by the Finite-Difference Method." International Journal of Mechanical Engineering Education 35, no. 4 (2007): 305–15. http://dx.doi.org/10.7227/ijmee.35.4.5.

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This paper presents the development of an interactive program (called SSTDD) to solve two-dimensional conduction heat transfer equations in a square domain using the finite-difference method. The development of the tool (based on a computer-aided design package), on a Visual BASIC 6.0 platform, involved the application of the heat transfer equations and the appropriate boundary conditions to a square domain. The finite-difference method was used to express the elliptic differential equation in a form suitable for numerical solution. The system of linear equations generated was solved by the Ga

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Guo, Qiang, Kai He, Hengyuan Xu та Youyi Wen. "The research on precise forming technology of “λ” type composite skin". Composites and Advanced Materials 30 (1 січня 2021): 263498332199474. http://dx.doi.org/10.1177/2634983321994749.

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With the application of “ λ” type composite skin becoming more and more extensive and diversified, its precise forming technology is also widely concerned. This article mainly solves the quality problems of “ λ” type corner area, such as delamination dispersion and surface wrinkle, which exist in reality commonly in the manufacturing process. The prepreg is heated along the corner area of the tooling to solve the problem that prepreg is difficult to be compacted due to the large modulus of carbon fiber in “ λ” type corner area. Furthermore, two precompaction tests are creatively increased at 1

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Wu, Peng Cheng, Fang Chen Xia, and Hai Ning Tu. "The Free-Form Surface Five-Axis Machining Global Interference Detection and Adjustment of Cutter Shaft." Advanced Materials Research 393-395 (November 2011): 1550–53. http://dx.doi.org/10.4028/www.scientific.net/amr.393-395.1550.

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Proposed a construction method of visual cone, to solve the surface 5-axis NC machining tool interference problems with the surface. At any point on the surface structure the visual cone area, according to visual cone determine whether the global tool interference with surface, and correct the tool spindle of interference cutter, solved the global surface and tool interference problems successfully. The application shows, this method is of high efficiency, high precision.

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Lauritzen, Peter H., Eigil Kaas, and Bennert Machenhauer. "A Mass-Conservative Semi-Implicit Semi-Lagrangian Limited-Area Shallow-Water Model on the Sphere." Monthly Weather Review 134, no. 4 (2006): 1205–21. http://dx.doi.org/10.1175/mwr3115.1.

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Abstract A locally mass conservative shallow-water model using a two-time-level, semi-implicit, semi-Lagrangian integration scheme is presented. The momentum equations are solved with the traditional semi-Lagrangian gridpoint form. The explicit continuity equation is solved using a cell-integrated semi-Lagrangian scheme, and the semi-implicit part is designed such that the resulting elliptic equation is on the same form as for the traditional semi-Lagrangian gridpoint system. The accuracy of the model is assessed by running standard test cases adapted to a limited-area domain. The accuracy and

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Korytárová, J., and V. Hromádka. "Assessment of the flood damages on the real estate property in the Czech Republic area." Agricultural Economics (Zemědělská ekonomika) 56, No. 7 (2010): 317–24. http://dx.doi.org/10.17221/56/2010-agricecon.

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The problem of floods can be solved by investment activities in the form of the flood protection measures or by the potential liquidation of damages after the flood. In the frame of the solved grant projects, there was developed the basic methodology for the losses on the immovable property in the territory assessment and consequently the database of input data for its use. The output of the described methodology enables the comparison of the potential losses on immovable property with the investment costs for the flood protection measures. In order to be able to estimate the occurred losses,

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Crowe, Kevin, John Nelson, and Mark Boyland. "Solving the area-restricted harvest-scheduling model using the branch and bound algorithm." Canadian Journal of Forest Research 33, no. 9 (2003): 1804–14. http://dx.doi.org/10.1139/x03-101.

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There are two broad approaches to the discrete optimization problem of harvest scheduling with adjacency constraints: the unit-restricted model and the area-restricted model. In this paper two formulations of the area-restricted model are solved using the branch and bound algorithm. These formulations are tested on a set of approximately 30 tactical planning problems that range in size from 346 to 6093 polygons scheduled over three time periods. Our results show that these formulations can be used to solve small- and medium-sized harvest-scheduling problems optimally, or near-optimally, within

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Sharan, A. M., J. Jain, and P. Kalra. "Efficient Methods for Solving Dynamic Problems of Flexible Manipulators." Journal of Dynamic Systems, Measurement, and Control 114, no. 1 (1992): 78–88. http://dx.doi.org/10.1115/1.2896510.

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In this work, efficient methods for solving dynamic problems in the robotics area are discussed. The nonlinear dynamic equations are derived and their linearization is verified. The unconstrained dynamic problems for a flexible arm robot are solved by four efficient numerical techniques. The constrained problems are solved by Revised Simplex Method and the Karmarkar’s Algorithm.

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A.Jassem, Natheer, and Nabaa A. Ali. "Tilted Implant Technique Solved Numerous Limitation of Straight Technique." Tikrit Journal for Dental Sciences 4, no. 2 (2023): 157–62. http://dx.doi.org/10.25130/tjds.4.2.10.

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Present of important anatomical structures in both upper and lower jaws make challenge during planning for implant procedures in the atrophic alveolar bone and to overcome this problem need bone augmentation which still complex and difficult procedures make it not accepted by large number of patient. In this study we spot light on the teeth implant in an area where short bone or insufficient height of alveolar ridge and inclined alveolar ridge so when we place implant should be tilted either palatelly, mesially or distally in bone around and we compare the success rate between angled placed im

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McDill, Marc E., Stephanie A. Rebain, and Janis Braze. "Harvest Scheduling with Area-Based Adjacency Constraints." Forest Science 48, no. 4 (2002): 631–42. http://dx.doi.org/10.1093/forestscience/48.4.631.

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Abstract Adjacency constraints in harvest scheduling models prevent the harvest of adjacent management units within a given time period. Two mixed integer linear programming (MILP) harvest scheduling formulations are presented that include adjacency constraints, yet allow the simultaneous harvest of groups of contiguous management units whose combined areas are less than some predefined limit. These models are termed Area Restriction Models, or ARMs, following Murray (1999). The first approach, the Path Algorithm, generates a set of constraints that prevent concurrent harvesting of groups of c

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Baydin, G. S., and A. S. Titov. "Method for Calculating the Particle Projection Area in Two-Dimensional Nanoscale Images using the Threshold Algorithms." Herald of the Bauman Moscow State Technical University. Series Instrument Engineering, no. 4 (141) (December 2022): 4–19. http://dx.doi.org/10.18698/0236-3933-2022-4-4-19.

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The growing complexity of studying nanoscale images and meshing the results of experiments processing makes it necessary to automate this process to improve accuracy and reliability of the results obtained. As part of the ongoing research, a method was developed to determine automatically the particles area in the electron microscope images. The threshold algorithm and its modification was considered to identify particles in the nanoscale images. Block matching and 3D filtering algorithm was selected for preprocessing. The optimal sequence of the above algorithms for images application was obt

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Song, Yu Bo. "Study of Location Optimization Scheduling with Multiple Storage Tasks at Container Storage Area of Airport Freight Station." Applied Mechanics and Materials 220-223 (November 2012): 132–36. http://dx.doi.org/10.4028/www.scientific.net/amm.220-223.132.

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In this paper, we made a deep analysis on the operational conditions and the process of double plate of ETV at the packaging zone of airport freight station, and considered double plate factor in the freight lot allocation problem of multi Unit Load Device (ULD) storage tasks. The freight lot allocation problem of multi ULD at the packaging zone was translated into a multi-objective optimization problem with constraints and a mathematical model was set up. Niche technique was introduced into genetic algorithm, and storage location was constructed to optimize genetic algorithm. The model was so

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Okubo, Aya, and Yoshie Mori. "Analysis of Maternal Health Examination and Issues to be Solved in a Rural Area of Bangladesh." Kitakanto Medical Journal 56, no. 3 (2006): 213–23. http://dx.doi.org/10.2974/kmj.56.213.

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Xiao, Waikong. "Applications of graphene in organic anticorrosive coatings." Applied and Computational Engineering 63, no. 1 (2024): 21–27. http://dx.doi.org/10.54254/2755-2721/63/20240989.

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The problem of corrosion of materials has lasted for a long time, corrosion causes damage to the structure of buildings and bringing loss of economy. The coating method, which is an easy and economical way to solve the problem, is still unable to satisfy the needs limited by the paints properties. However, this can be solved by introducing graphene, by its special 2-D material properties, to the paint. And a lot of researchers are working on this now. This paper mainly focuses on the overview of how graphene be applied to anti-corrosive coatings, the problems that are faced, what are solutions

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Xiao, Zheng-Zhi, Hai-Lin Liu, Zheng-Liang Li, Deng-Ke Yu, and Ying-Gang Li. "Research on Wind-Induced Reliability of Double Column Suspended Guyed Tower in Strong Wind Area." International Journal of Structural Stability and Dynamics 16, no. 01 (2016): 1640011. http://dx.doi.org/10.1142/s0219455416400113.

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The ultra-high voltage transmission line is long, which needs to pass through the various complex terrains. In order to ensure the safe structural system, understanding and grasping the wind-induced response and reliability of double column suspended guyed tower (DCSGT) in strong wind area of Gobi Desert are basic requirements. Through combining the conditional probability density of wind speed and frequency function of wind direction, the successive-type joint distribution model of wind speed and direction is obtained by multiplication theorem. In accordance with the principle of equivalent e

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Makhonin, I. O. "AREA OF INITIAL POSITIONS OF A UAV (UNMANNED AERIAL APPARATUS) IN THREEDIMENSIONAL SPACE." Issues of radio electronics, no. 7 (July 20, 2018): 24–29. http://dx.doi.org/10.21778/2218-5453-2018-7-24-29.

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When landing an unmanned aerial vehicle (UAV) on a ship, it is required to perform the specified boundary values of the state vector at the moment of approach to the hook equipment. The article considers the solution of the problem of calculating the points of the area of initial positions of UAV. It is mean, that each point provide hitting for the UAV to a predetermined aiming area at a given time in the vicinity of the hitch. In this case, the phase coordinates of the UAV at the time of approach to the hook device have to defined. To calculate the points located on the boundary of the area o

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McCarthy, P. J., M. Crampin, and W. Stephenson. "Graphs in the plane invariant under an area preserving linear map and general continuous solutions of certain quadratic functional equations." Mathematical Proceedings of the Cambridge Philosophical Society 97, no. 2 (1985): 261–78. http://dx.doi.org/10.1017/s0305004100062812.

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AbstractThe requirement that the graph of a function be invariant under a linear map is equivalent to a functional equation of f. For area preserving maps M(det (M) = 1), the functional equation is equivalent to an (easily solved) linear one, or to a quadratic one of the formfor all Here 2C = Trace (M). It is shown that (Q) admits continuous solutions ⇔ M has real eigenvalues ⇔ (Q) has linear solutions f(x) = λx ⇔ |C| ≥ 1. For |c| = 1 or C < – 1, (Q) only admits a few simple solutions. For C > 1, (Q) admits a rich supply of continuous solutions. These are parametrised by an arbitrary fun

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Rudyana, Anisha Primadita, and Najamuddin Khairur Rijal. "Business track diplomacy: 4ocean effort in mitigation of plastic waste in Bali waters area." Jurnal Inovasi Ilmu Sosial dan Politik (JISoP) 4, no. 1 (2022): 82. http://dx.doi.org/10.33474/jisop.v4i1.15956.

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Environmental issues have become one of the global problems with a high degree of urgency. The province of Bali is one of the absolute highlights with evidence of a poor water quality index. In studying international relations, global problems can be solved through diplomatic instruments by interested countries. Uniquely, footage of phenomena in the field shows that there are non-governmental actors, namely business people, trying to solve environmental problems to lead to world peace. This study aims to examine 4Ocean's efforts to mitigate plastic waste in the waters of Bali. The author uses

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PEROVA, Olga, and Igor LAVIT. "THE PROBLEM OF AN EDGE CRACK IN A HALF-PLANE." Expert Theory and Practice, no. 4 (27) (December 23, 2024): 110–14. https://doi.org/10.51608/26867818_2024_4_110.

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The problem of stretching a half-plane with an edge crack by a distributed load was solved by Koiter and Wigglesworth. Their solutions obtained using integral transformations are very complex; therefore, attempts have been made to solve the problem by other methods. These methods are also more complicated than the classical methods of Kolosov and Muskhelishvili and are suitable only for a narrow class of problems. But there may be an idea that it is impossible to solve the problem of a crack in a half-plane and similar problems using classical methods. However, this is not the case, which is c

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Iskhakov, Almaz R. "Method of structural synthesis of a technical vision system for the problem of area measurement." Journal Of Applied Informatics 17, no. 6 (2022): 122–34. http://dx.doi.org/10.37791/2687-0649-2022-17-6-122-134.

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The article presents the results of a study of the problem of structural synthesis of a vision system and its parametric identification using a new method based on the mathematical apparatus of the theory of modified descriptive image algebras. The theory of modified descriptive image algebras is a mathematical apparatus that allows one to formally describe the processing and analysis of images. In this mathematical apparatus, it is possible to describe the mathematical model of the measurement function of the technical vision system for the selected attribute of the observed object. To develo

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Htiouech, Skander, Khalil Chebil, Mahdi Khemakhem, Fidaa Abed, and Monaji H. Alkiani. "An Extended Model for the UAVs-Assisted Multiperiodic Crowd Tracking Problem." Complexity 2023 (February 1, 2023): 1–14. http://dx.doi.org/10.1155/2023/3001812.

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The multiperiodic crowd tracking (MPCT) problem is an extension of the periodic crowd tracking (PCT) problem, recently addressed in the literature and solved using an iterative solver called PCTs solver. For a given crowded event, the MPCT consists of follow-up crowds, using unmanned aerial vehicles (UAVs) during different periods in a life-cycle of an open crowded area (OCA). Our main motivation is to remedy an important limitation of the PCTs solver called “PCTs solver myopia” which is, in certain cases, unable to manage the fleet of UAVs to cover all the periods of a given OCA life-cycle du

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Le, Anh Vu, Rizuwana Parween, Rajesh Elara Mohan, Nguyen Huu Khanh Nhan, and Raihan Enjikalayil Abdulkader. "Optimization Complete Area Coverage by Reconfigurable hTrihex Tiling Robot." Sensors 20, no. 11 (2020): 3170. http://dx.doi.org/10.3390/s20113170.

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Completed area coverage planning (CACP) plays an essential role in various fields of robotics, such as area exploration, search, rescue, security, cleaning, and maintenance. Tiling robots with the ability to change their shape is a feasible solution to enhance the ability to cover predefined map areas with flexible sizes and to access the narrow space constraints. By dividing the map into sub-areas with the same size as the changeable robot shapes, the robot can plan the optimal movement to predetermined locations, transform its morphologies to cover the specific area, and ensure that the map

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Hui, Guo. "Management of Water Quality Information in Mining Subsidence Waterlogged Area." Advanced Materials Research 726-731 (August 2013): 3702–5. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.3702.

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Based of the technology of CAD VBA and Access database, the program of water quality monitoring information management in mining subsidence area is developed; it mainly includes functions of attribute query, attribute edition, visualization of water monitoring point. The table structure in monitoring point attribute database is designed, and problem of dynamic linkage between drawing data and attribute data is solved. The key code about them is given in the paper. The program can provide some decision support for reasonable use of water resources and environment protection in the mine area, an

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Zhang, Jinman, Yueguan Yan, Huayang Dai, Liangji Xu, Jiewei Li, and Ruirui Xu. "Hyperbolic Secant Subsidence Prediction Model under Thick Loose Layer Mining Area." Minerals 12, no. 8 (2022): 1023. http://dx.doi.org/10.3390/min12081023.

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In China, as a major resource, coal has made great contributions to national energy security and social development. The mining of coal resources can cause surface subsidence damage, and in particular, the mining of coal resources in thick loose layer mines is the most serious. How to accurately predict the surface subsidence caused by coal mining in thick loose layer mines has become an urgent problem to be solved. To solve this problem, numerical simulations based on the measured data were used to reveal that the thickness of the loose layer is the intrinsic mechanism that affects the value

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OHARA, Kotaro. "The Roles of Farmers’Market for the Vitalization of Rural Area and Problem to be Solved." Journal of Rural Studies 18, no. 2 (2012): 24–35. http://dx.doi.org/10.9747/jars.18.2_24.

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최영만. "A Study on a Problem of Territorial Rights Regarding Gando Area and How It could be Solved." Institute for Humanities and Social Sciences 12, no. 1 (2011): 243–71. http://dx.doi.org/10.15818/ihss.2011.12.1.243.

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Zyryanov, Sergey Mikhailovich, and Anastasia Valentinovna Kalmykova. "Regulation – the area of inter-branch knowledge application." SHS Web of Conferences 118 (2021): 01010. http://dx.doi.org/10.1051/shsconf/202111801010.

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The purpose of the study is to justify the feasibility of using regulatory policy and sectoral scientific tools in the daily activities of regulatory bodies. The study used a wide range of sources containing empirical data reflecting modern theoretical concepts of regulation. The authors used general scientific and special methods of cognition, methods of analysis and synthesis, formal logic, comparative jurisprudence, and interpretation of law. The result of the study was an overview of the points of view of modern scientists on regulation problems and the use of an intersectoral approach. In

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Sorokin, S. А., and O. Yu Sysoev. "ABOUT FANOUTS PLACEMENT IN BGA COMPONENT AREA." Issues of radio electronics, no. 5 (June 8, 2019): 134–38. http://dx.doi.org/10.21778/2218-5453-2019-5-134-138.

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During the routing in the BGA area, two related problems need to be solved: the first one is the arrangement of the two‑ports under the BGA component in such a way that the maximum number of vias (through) can be accommodated, the second is the placement of vias and the assignment of vias to each BGA contact (or group of equipotential contacts). The approach to solving the first problem was previously proposed by the authors. The second problem was considered in the literature as applied to irregular BGA components, but the proposed method needs clarification in terms of using information on t

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