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Articles de revues sur le sujet « Self-solved »

Auteur : Grafiati

Publié le 10 mars 2023

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1

Maslov, Sergei, et Yi-Cheng Zhang. « Exactly Solved Model of Self-Organized Criticality ». Physical Review Letters 75, n^o 8 (21 août 1995) : 1550–53. http://dx.doi.org/10.1103/physrevlett.75.1550.

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Dhar, Deepak, et Ramakrishna Ramaswamy. « Exactly solved model of self-organized critical phenomena ». Physical Review Letters 63, n^o 16 (16 octobre 1989) : 1659–62. http://dx.doi.org/10.1103/physrevlett.63.1659.

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Zhao, Yulin, Dingbang Luh, Yue Sun et Fei Sun. « A Design Thinking Technique of Letting Problems Solved by Self ». Mathematical Problems in Engineering 2022 (21 août 2022) : 1–10. http://dx.doi.org/10.1155/2022/3265351.

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This paper puts forward the thinking mode of problems solved by self, which can turn complaints into wishes that resembles needs beyond user’s expectation and imagination. Inferring the framework for solving problems from existing problem materials, the proposed technique employs literal logic to manipulate mathematical strategies, so that rational thinking can guide the development of affectional contexts, and automatically generate solution concepts, systematically and systemically. Through the demonstration of a design case study and comparative analysis of the effectiveness of related creative techniques the feasibility, novelty, advancement, and practicality of the proposed model are verified. The proposed tool can assist its users to think outside the black box and create “needs that adopters yet to aware.”

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Huibregtse, K., D. L. Carr-Locke, M. Cremer, W. Domschke, P. Fockens, E. Foerster, F. Hagenmüller et al. « Biliary Stent Occlusion - A Problem Solved with Self-Expanding Metal Stents ? » Endoscopy 24, n^o 05 (juin 1992) : 391–94. http://dx.doi.org/10.1055/s-2007-1010505.

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Hongu, Taiga, et Masami Hagiya. « Self-Stabilizing Distributed Algorithms by Gellular Automata ». Complex Systems 30, n^o 2 (15 juin 2021) : 159–85. http://dx.doi.org/10.25088/complexsystems.30.2.159.

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Gellular automata are cellular automata with the properties of asynchrony, Boolean totality and noncamouflage. In distributed computing, it is essential to determine whether problems can be solved by self-stable gellular automata. From any initial configuration, self-stable gellular automata converge to desired configurations, as self-stability implies the ability to recover from temporary malfunctions in transitions or states. This paper shows that three typical problems in distributed computing, namely, solving a maze, distance-2 coloring and spanning tree construction, can be solved with self-stable gellular automata.

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Bartel, Tanja. « Mystery solved : Our son's autism and extreme self-injury is genetic and treatable ». American Journal of Medical Genetics Part A 173, n^o 5 (21 mars 2017) : 1190–93. http://dx.doi.org/10.1002/ajmg.a.38198.

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Tang, Thomas Li-Ping, Peggy Smith Tollison et Harold D. Whiteside. « Quality Circle Productivity as Related to Upper-Management Attendance, Circle Initiation, and Collar Color ». Journal of Management 15, n^o 1 (mars 1989) : 101–13. http://dx.doi.org/10.1177/014920638901500109.

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The productivity of 47 quality circles (QCs) over a 3-year period was examined using the archival data of a QC program. The dependent variables were the quantity of QC presentations and the speed of problem solving. These two dependent variables were examined as related to upper-management attendance (high vs. low), QC initiation (management-initiated vs. self-initiated), and collar color (white vs. blue) in a 2 x 2 x 2 MANOVA. The results showed that QCs with a high level of upper-management attendance solved their problems significantly faster than did those QCs with a low level of attendance. Management-initiated QCs solved their problems significantly faster and solved more problems than did self-initiated QCs. Self-initiated QCs with a low level of upper-management attendance had a slower speed ofproblem solving. Further, self-initiated QCs with white-collar workers also had a slower speed of problem solving.

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Roelle, Julian, Sophie Krüger, Christian Jansen et Kirsten Berthold. « The Use of Solved Example Problems for Fostering Strategies of Self-Regulated Learning in Journal Writing ». Education Research International 2012 (2012) : 1–14. http://dx.doi.org/10.1155/2012/751625.

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Writing learning journals is a powerful tool to integrate self-regulated learning in classrooms. However, to exploit the full potential of journal writing, instructional support is needed that addresses the students’ deficits in the use of self-regulated learning strategies. A promising means to foster learning strategies in learning journals is the provision of solved example problems along with prompts. In a quasiexperimental field study, we provided fifth-grade students (N=48) with solved example problems along with prompts either right from the beginning of writing their journals or after they had already written two learning journal entries. We found that the provision of solved example problems along with prompts right from the beginning of the journal writing process fostered the quality of both cognitive and metacognitive strategies and conceptual knowledge in the initial phase. The delayed provision of solved example problems after an initial phase of journal writing yielded a detrimental effect on the quality of cognitive strategies and a beneficial effect on the quality of metacognitive strategies. In sum, our results suggest that the provision of solved example problems along with prompts right from the beginning of journal writing can effectively support fifth-grade students in overcoming deficits in the use of self-regulated learning strategies.

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Singh, Surinder P., Neil Goldsman et Isaak D. Mayergoyz. « Self-Consistent Solution of the Multi Band Boltzmann, Poisson and Hole-Continuity Equations ». VLSI Design 6, n^o 1-4 (1 janvier 1998) : 257–60. http://dx.doi.org/10.1155/1998/14582.

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The Boltzmann transport equation (BTE) for multiple bands is solved by the spherical harmonic approach. The distribution function is obtained for energies greater than 3 eV. The BTE is solved self consistently with the Poisson equation for a one dimensional npn bipolar junction transistor (BJT). The novel features are: the use of boundary fitted curvilinear grid, and Scharfetter Gummel type discretization of the BTE.

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Wang, Zi Cheng, Li Zheng Bian et Guang Zhao Cui. « 3D DNA Self-Assembly Model for Minimum Control Sets Problem ». Advanced Materials Research 562-564 (août 2012) : 1610–14. http://dx.doi.org/10.4028/www.scientific.net/amr.562-564.1610.

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In this paper, the minimum control sets(MCS) problem was solved by means of DNA self-assemble. We constructed the three-dimensional (3D) DNA molecular tiles and seed configuration to self-assemble. The results show that DNA self-assembly is an effective and feasible method for solving NP problem.

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Bituev, I. K. « Designing Self-Balanced Spatial Mechanisms ». Applied Mechanics and Materials 770 (juin 2015) : 328–32. http://dx.doi.org/10.4028/www.scientific.net/amm.770.328.

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This paper summarises the results obtained from a study of the conditions required to achieve self-balanced mechanical systems. The design self-balanced systems composed of single-loop spatial mechanisms with a common drive shaft, is reviewed. The paper explains how the problems are solved by selecting the relative angles of the mechanism's cranks, their number and mutual arrangement. The resulting self-balancing criteria enable the construction of spatial mechanical systems with predetermined levels of residual imbalance.

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Zhang, Xiaoyi, Kai-Tak Lam, Kain Lu Low, Yee-Chia Yeo et Gengchiau Liang. « Nanoscale FETs Simulation Based on Full-Complex-Band Structure and Self-Consistently Solved Atomic Potential ». IEEE Transactions on Electron Devices 64, n^o 1 (janvier 2017) : 58–65. http://dx.doi.org/10.1109/ted.2016.2632310.

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Liu, Bao You, et Ya Ru Liu. « Rational Analysis of Sewage Treatment ». Advanced Materials Research 889-890 (février 2014) : 1617–20. http://dx.doi.org/10.4028/www.scientific.net/amr.889-890.1617.

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Sewage treatment problem is a typical linear programming problem, and can be solved by method of linear programming. In order to reflect the principle of fairness and make full use of self-purification capacity of environment, this paper gives rational analysis of the sewage disposal problems in 2007 Chinese Undergraduate Mathematical Modeling Contest. The mathematical model of linear programming is established, and solved by lingo optimization software. The results show that: by the principle of fairness, investment funds increased; by the principle of self-purification capacity of environment, investment funds decreased. The results can provide guidance for decision makers to choose different scheme.

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Gill, T. S., R. Mahajan et R. Kaur. « Relativistic and ponderomotive effects on evolution of dark hollow Gaussian electromagnetic beams in a plasma ». Laser and Particle Beams 28, n^o 4 (14 octobre 2010) : 521–29. http://dx.doi.org/10.1017/s0263034610000571.

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AbstractNonlinear parabolic partial differential equation governing the evolution of complex envelope in slowly varying envelope approximation is solved using variational approach. The basic nonlinear phenomena of relativistic and ponderomotive self-focusing in a plasma are taken into account. Self-focusing, self-phase modulation as well as self-trapping of dark hollow Gaussian beam is studied for higher orders of hollow Gaussian beam (n).

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Savir, Jacob, et Paul H. Bardell. « Built-In Self-Test : Milestones and Challenges ». VLSI Design 1, n^o 1 (1 janvier 1993) : 23–44. http://dx.doi.org/10.1155/1993/81360.

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This paper describes the progress in built-in self-test (BIST) since its inception, and the important problems that still need to be solved to make the technique widely acceptable. The paper includes a reference list and an extensive bibliography on the subject matter.

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16

Koupilová, Zdeňka, Dana Mandíková et Marie Snětinová. « Electronic collection of solved physics problems to encourage students’ active approach (not only to self study) ». European Journal of Physics 38, n^o 5 (22 juin 2017) : 055801. http://dx.doi.org/10.1088/1361-6404/aa7509.

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Gill, Tarsem Singh, Ravinder Kaur et Ranju Mahajan. « Relativistic self-focusing and self-phase modulation of cosh-Gaussian laser beam in magnetoplasma ». Laser and Particle Beams 29, n^o 2 (22 mars 2011) : 183–91. http://dx.doi.org/10.1017/s0263034611000152.

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AbstractIn this paper, we have investigated the propagation characteristics of cosh-Gaussian laser beam in magnetoplasma using relativistic nonlinearity. The field distribution in the medium is expressed in terms of beam width parameter an and decentred parameter b. An appropriate nonlinear Schräodinger equation has been solved analytically using variational approach. The behaviour of beam width parameter with dimensionless distance of propagation ξ for various b values is examined. Self-phase modulation and self-trapping is also studied under variety of parameters. Further, the effect of magnetic field on self-focusing of the beam have been explored.

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18

Sun, Jie, et Wen Xia Ding. « Research Status and Prospects of the Self-Repairing Concrete ». Advanced Materials Research 250-253 (mai 2011) : 393–96. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.393.

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Self-repairing concrete is that adhesive agent is composited inside the concrete to form the self-repairing system and automatically repair the damaging materials. It can solve some problems that are difficult to be solved by the traditional methods. The development background of the self-repairing concrete and the present research at home and abroad were reviewed. The existing problems of the present studies were also elaborated. Moreover, the development trend and the application prospect of the self-repairing concrete were forecast.

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Gill, T. S., R. Mahajan et R. Kaur. « Relativistic and ponderomotive effects on evolution of laser beam in a non-uniform plasma channel ». Laser and Particle Beams 28, n^o 1 (21 janvier 2010) : 11–20. http://dx.doi.org/10.1017/s0263034609990516.

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AbstractThe nonlinear parabolic partial differential equation governing the evolution of the complex envelope in the slowly varying envelope approximation is solved using the variational approach. The basic nonlinear phenomena of relativistic and ponderomotive self-focusing in a plasma channel are taken into account. Self-focusing, self-phase modulation as well as self-trapping of laser beam is studied in a variety of situations. Further, in the absence of dissipation mechanisms, the stability of the beam is also studied.

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20

Ning, Wenxiang, Qiang He et Jian Gong. « Research Status and Development Trend of Self-Compacting Concrete technology ». E3S Web of Conferences 198 (2020) : 03001. http://dx.doi.org/10.1051/e3sconf/202019803001.

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The definition of self-compacting concrete is briefly introduced. The research process of self-compacting concrete in various countries in the world is studied, from the initial test to the final formation of the preliminary application specification, and it is constantly improved. The mix proportion design, working performance, testing method, application and research status of self-compacting concrete are discussed in detail, and the problems to be solved in the future and the development prospect are prospected

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21

Wang, Lian, et Dong-Hong Xiong. « Lipschitz classification of self-similar sets with overlaps ». Monatshefte für Mathematik 195, n^o 2 (11 mars 2021) : 343–52. http://dx.doi.org/10.1007/s00605-021-01542-8.

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AbstractIn Rao et al. (Comptes Rendus Acad Sci Paris Ser I(342):191–196, 2006), Rao–Ruan–Xi solved an open question posed by David and Semmes and gave a complete Lipschitz classification of self-similar sets on $$\mathbb R$$ R with touching structure. In this short note, by applying a matrix rearrangeable condition introduced in Luo (J Lond Math Soc 99(2):428–446, 2019), we generalize their result onto the self-similar sets with overlapping structure.

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Che, Ping, Zhenhao Tang, Hua Gong et Xiaoli Zhao. « An Improved Lagrangian Relaxation Algorithm for the Robust Generation Self-Scheduling Problem ». Mathematical Problems in Engineering 2018 (22 juillet 2018) : 1–12. http://dx.doi.org/10.1155/2018/6303596.

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The robust generation self-scheduling problem under electricity price uncertainty is usually solved by the commercial solver, which is limited in computation time and memory requirement. This paper proposes an improved Lagrangian relaxation algorithm for the robust generation self-scheduling problem where the quadratic fuel cost and the time-dependent exponential startup cost are considered. By using the optimal duality theory, the robust generation self-scheduling problem, which has a max-min structure, is reformulated as a minimization mixed integer nonlinear programming (MINLP) problem. Upon the reformulation, the Lagrangian relaxation algorithm is developed. To obtain a solvable relaxed problem, the variable splitting technique is introduced before the relaxation. The obtained relaxed problem is decomposed into a linear programming-type subproblem and multiple single-unit subproblems. Each single-unit subproblem is solved optimally by a two-stage backward dynamic programming procedure. The special cases of the problem are discussed and a two-stage algorithm is proposed. The proposed algorithms are tested on test cases of different sizes and the numerical results show that the algorithms can find near-optimal solutions in a reasonable time.

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Hall, Rogers. « Cultural Artifacts, Self Regulation, and Learning : Commentary on Neuman's "Can the Baron von Münchausen Phenomenon be Solved?" ». Mind, Culture, and Activity 8, n^o 1 (février 2001) : 98–108. http://dx.doi.org/10.1207/s15327884mca0801_08.

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Abramov, Yuriy, Oleksii Basmanov, Valentina Krivtsova, Andrey Mikhayluk et Oleksandra Mikhayluk. « Developing an algorithm for monitoring gas generators of hydrogen storage and supply systems ». EUREKA : Physics and Engineering, n^o 2 (31 mars 2022) : 45–54. http://dx.doi.org/10.21303/2461-4262.2022.002262.

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In relation to the main element of the hydrogen storage and supply system based on the hydro-reacting composition – the gas generator – an algorithm for its control has been developed. The development of such an algorithm is carried out in three stages. At the first stage, the problem of formalizing the hydrogen generation process is solved. Formalization of this process is carried out using the transfer function of the gas generator. The use of the criterion for the minimum error of the mismatch of the given amplitude-frequency characteristics of the gas generator allows to represent its transfer function in the form of a transfer function of the inertial link. At the second stage, the problem of determining the conditions for the occurrence of self-oscillations in the pressure stabilization subsystem is solved. A prerequisite for the emergence of a self-oscillating mode of operation of the hydrogen storage and supply system is the presence of a relay static characteristic of the pressure sensor. For the characteristic parameters of such a system, the ranges of values of the parameters of self-oscillations, frequencies and amplitudes, are determined. For these parameters, analytical expressions are obtained, which include the main parameters of the pressure stabilization subsystem in the hydrogen storage and supply system. At the third stage, the problem of forming a gas generator control algorithm is solved. As a test action in the implementation of the control algorithm, self-oscillations in the pressure stabilization subsystem are used. The control algorithm for the gas generator of the hydrogen storage and supply system includes determining the parameters of self-oscillations and comparing their values with the values obtained a priori. A typical diagram of a hydrogen storage and supply system is presented, in which the developed gas generator control algorithm is implemented

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Febrina, Dilla Tria, Puji Lestari Suharso et Airin Yustikarini Saleh. « SELF-ESTEEM REMAJA AWAL : TEMUAN BASELINE DARI RENCANA PROGRAM SELF-INSTRUCTIONAL TRAINING KOMPETENSI DIRI ». JURNAL PSIKOLOGI INSIGHT 2, n^o 1 (12 juillet 2018) : 43–56. http://dx.doi.org/10.17509/insight.v2i1.11922.

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This research aimed to obtain baseline data as the first stage of preparation of self-instructional training programs as an intervention for early adolescents who had self-esteem problems. The participant in this study was a teenage boy who has a negative self-evaluation related to self-competence at school. The design in this research was single-subject, with A1-A2-A3 design. Measurement of self-esteem in this study was interview techniques on the participant, significant other, and teachers among three different situations. The instrument was developed based on high self-esteem characteristics of Rosenberg and Owens (Guindon, 2010). The results of this study indicated that the boy had low self-esteem related to self-competence and affected to important areas of development such as academic. Based on this study, further researchs was necessary to develope an intervention that solved the problems of self-esteem in early adolescence.

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Wang, Jian Lu, Yan Jun Lu, Hui Ma, Yong Fang Zhang et Yong Hui Chen. « A Method for Solving Stiffness of Finite Length Self-Acting Gas-Lubricated Journal Bearing ». Advanced Materials Research 562-564 (août 2012) : 643–49. http://dx.doi.org/10.4028/www.scientific.net/amr.562-564.643.

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Based on the differential transformation method, an efficient method is proposed to calculate stiffness of finite length self-acting gas-lubricated journal bearing. Time dependent Reynolds equation in gas lubrication of the self-acting journal bearing is solved, gas film pressure distribution and stiffness of the bearing are obtained. In comparison with the partial derivative method, the proposed method for solving stiffness of self-acting gas-lubricated journal bearing is verified. The proposed method can provide the theoretical reference to the dynamic design of self-acting gas-lubricated journal bearing-rotor system.

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Pozhalostin, A. A., et A. V. Panshina. « Self-oscillations in one-dimensional elastic systems with friction ». Izvestiya MGTU MAMI 8, n^o 4-4 (20 août 2014) : 71–75. http://dx.doi.org/10.17816/2074-0530-67374.

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The possibility of self-oscillations in the case of transverse vibrations of elastic homogeneous beams is investigated taking into account presence of dry friction in system. The problem is solved using examples of a beam suspended by one end on rotating shaft and a beam articulated at ends. The method of replacing original system by equivalent mechanical oscillation system is used.

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Lassiter, Katharine E. « Write Like Wittgenstein on lsd : Crisis, Self-Reflexivity, & ; Representation in Ethnographic Theology ». Ecclesial Practices 8, n^o 2 (24 décembre 2021) : 129–41. http://dx.doi.org/10.1163/22144471-bja10013.

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Abstract Questions of representation and normativity are not just methodological questions that can be solved by application of right technique. They are questions that researchers must take up by scaffolding self-reflexive movements into any ethnographic projects. This scaffolding serves as a larger project toward ethnographic theology as therapy.

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Sinelnikov, Alexander B. « Demographic Self-Regulation in Terms of Population Growth and Decline ». Sociological Journal 25, n^o 4 (2019) : 84–92. http://dx.doi.org/10.19181/socjour.2019.25.4.6819.

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The author of this article A.B. Sinelnikov polemizes with A.G. Vishnevsky and asks him several questions. Vishnevsky considers the population as a self-regulating system. This system itself brings its size (number of inhabitants) in line with the economic and environmental situation. Vishnevsky considers state intervention in the process of demographic self-regulation to be ineffective, when it comes to measures aimed at increasing birth rate. According to Sinelnikov, self-regulation can slow down population growth (“demographic explosion”). However, there is no self-regulation to protect against natural population decline (depopulation). This problem can only be solved through demographic policy.

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Erhardt, M. C., R. Osorio, J. Pisani-Proenca, F. S. Aguilera, E. Osorio, L. Breschi et M. Toledano. « Effect of Double Layering and Prolonged Application Time on MTBS of Water/Ethanol-based Self-etch Adhesives to Dentin ». Operative Dentistry 34, n^o 5 (1 septembre 2009) : 571–77. http://dx.doi.org/10.2341/08-060-l.

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Clinical Relevance Problems related to the chemical formulation and/or chemical dispersion of hydrophilic/hydrophobic components in one-step self-etch adhesives limit their efficacy and are not easily solved by changing the different bonding application parameters.

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Khanal, S., et R. Khanal. « Effect of Convective, Diffusive and Source Terms in Self Generated Magnetic Field due to Laser Plasma Interactions ». Himalayan Physics 5 (30 juin 2015) : 27–30. http://dx.doi.org/10.3126/hj.v5i0.12822.

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Laser-plasma interaction phenomenon has various applications and the most important one is in the Inertial confinement Fusion. Spatial and temporal variations of self generated magnetic field have been studied within the framework of magneto hydrodynamics. The evolution equation that describes the generation of magnetic field is solved using complex Fourier and Laplace transformation methods as an initial value problem. Convective, diffusive and source terms are considered in the evolution equation and are solved theoretically. Magnetic fields of the order of megagauss have been obtained among which the maximum field is just about 40 MG. The results are comparable with earlier reported results.The Himalayan Physics Year 5, Vol. 5, Kartik 2071 (Nov 2014)Page: 27-30

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Park, Ho Hyun. « A Study on the Commercialization of Autonomous Vehicles : Focused on Legal and Institutional Improvement ». Forum of Public Safety and Culture 17 (30 juillet 2022) : 229–46. http://dx.doi.org/10.52902/kjsc.2022.17.229.

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Humans have adapted to various environments. They have led to many changes. In particular, humans controlled strong animals and used them as livestock. These efforts have led to increased agricultural production. Humans have experienced many things. Through these experiences, humans solved the inconvenience themselves. Based on this, human life has become comfortable and convenient. The center of this change can be said to be the development of artificial intelligence. Through the development of artificial intelligence, music, art, and writing activities have become possible. These activities were activities that only humans could do. With these changes, wheels were invented. The invention of the wheel shortened the travel time, thereby expanding the area of activity. However, the invention of automobiles has provided various advantages to humans. Nevertheless, there are problems that infringe on human life, body, and property. Self-driving cars were created to solve these problems. Self-driving cars are equipped with artificial intelligence. Therefore, it is possible to travel without human manipulation. The birth of self-driving cars solved the problems of automobiles. Nevertheless, there are problems with self-driving cars. Therefore, it is necessary to examine the development process, legal and institutional processes of advanced countries. Through these analyses, we need to apply things that help us. These efforts will be an opportunity to open the era of commercialization of self-driving cars.

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Casana, Rodolfo, et Lucas Sourrouille. « Self-dual soliton solutions in a Chern–Simons-CP(1) model with a nonstandard kinetic term ». Modern Physics Letters A 29, n^o 23 (24 juillet 2014) : 1450124. http://dx.doi.org/10.1142/s0217732314501247.

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A generalization of the Chern–Simons-CP(1) model is considered by introducing a nonstandard kinetic term. For a particular case, of this nonstandard kinetic term, we show that the model support self-dual Bogomol'nyi equations. The Bogomol'nyi–Prasad–Sommerfield (BPS) energy has a bound proportional to the sum of the magnetic flux and the CP(1) topological charge. The self-dual equations are solved analytically and verified numerically.

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Mekhanich, I. V. « Development of Coupled Model of SHS-Extrusion ». Advanced Materials Research 1040 (septembre 2014) : 461–65. http://dx.doi.org/10.4028/www.scientific.net/amr.1040.461.

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In this paper mathematical model of self-propagating high-temperature synthesis combined with extrusion was proposed and investigated. The problem was solved in one-dimensional formulation with consideration of viscous, thermal and concentration stresses. Evolution of temperature, density was investigated.

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Tseng, Tien-Wen, Tzuoo-Tsair Luo, Chong-Cheng Su, Hui-Huan Hsu, Chen-I. Yang et Kuang-Lieh Lu. « An unusual cobalt(ii)-based single-walled metal–organic nanotube ». CrystEngComm 16, n^o 13 (2014) : 2626–33. http://dx.doi.org/10.1039/c3ce41952e.

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Self-adaption to the formation of an unusual cobalt(ii)-based single-walled metal–organic nanotube is reported. In addition, a pseudo-merohedral twinning problem encountered in the X-ray diffraction analysis was solved, which significantly improves the crystallographic results.

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Salih, Murad Hussein, Gemechis File Duressa et Habtamu Garoma Debela. « Numerical solution of singularly perturbed self-adjoint boundary value problem using Galerkin method ». International Journal of Engineering, Science and Technology 12, n^o 3 (15 septembre 2020) : 26–37. http://dx.doi.org/10.4314/ijest.v12i3.3.

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This paper presents numerical solution of second order singularly perturbed self-adjoint boundary value problems using weighted residual method of Galerkin type. First, for the given problem, the residue was computed using appropriate approximated basis function which satisfies all the boundary conditions. Then, using the chosen weighting function, integrating the weighted residue over the domain and the given differential equation is transformed to linear systems of algebraic equations. Further, these algebraic equations were solved using Galerkin method. To validate the applicability of the proposed method, two model examples have been considered and solved for different values of perturbation parameter and with different order of basis function. Additionally, convergence of error bounds has been established for the method. As it can be observed from the numerical results, the present method approximates the exact solution very well. Moreover, the present method gives better accuracy when the order of basis function is increased and it also improves the result of the methods existing in the literature. Keywords: Singularly perturbed problems, Self-adjoint problem, Galerkin method, Boundary value problems.

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Jiang, Tian Hua, et Hong Sen Yan. « Self-Evolution of an Assembly Workshop in Knowledgeable Manufacturing Environment ». Applied Mechanics and Materials 602-605 (août 2014) : 623–28. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.623.

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In this study, the self-evolution problem of knowledgeable manufacturing systems is studied by taking an assembly workshop as an example. The rolling horizon procedure (RHP) is adopted to implement the self-evolution process of the workshop. The whole dynamic self-evolution process is decomposed into several static decision processes. At each decision point, a static decision sub-problem needs to be solved. A general mathematical model of these sub-problems is built, and a bi-level genetic algorithm (BiGA) is designed. Simulation results show that the model and algorithm are feasible and effective. By comparison, the system with self-evolution operations has a better production performance.

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Afridi, Muhammad, Abderrahim Wakif, Muhammad Qasim et Abid Hussanan. « Irreversibility Analysis of Dissipative Fluid Flow Over A Curved Surface Stimulated by Variable Thermal Conductivity and Uniform Magnetic Field : Utilization of Generalized Differential Quadrature Method ». Entropy 20, n^o 12 (7 décembre 2018) : 943. http://dx.doi.org/10.3390/e20120943.

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The effects of variable thermal conductivity on heat transfer and entropy generation in a flow over a curved surface are investigated in the present study. In addition, the effects of energy dissipation and Ohmic heating are also incorporated in the modelling of the energy equation. Appropriate transformations are used to develop the self-similar equations from the governing equations of momentum and energy. The resulting self-similar equations are then solved by the Generalized Differential Quadrature Method (GDQM). For the validation and precision of the developed numerical solution, the resulting equations are also solved numerically using the Runge-Kutta-Fehlberg method (RKFM). An excellent agreement is found between the numerical results of the two methods. To examine the impacts of emerging physical parameters on velocity, temperature distribution and entropy generation, the numerical results are plotted against the various values of physical flow parameters and discussed physically in detail.

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Дьяков et S. D'yakov. « Semantic Mechanisms of Mental Self-Organization of Subjects Learning ». Socio-Humanitarian Research and Technology 6, n^o 2 (18 juillet 2017) : 3–9. http://dx.doi.org/10.12737/article_595cd1e2d9fe90.96030694.

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In the context of the systems principle in the modern synergistic approach the author considers semantic mechanisms of psychic self-organization of subjects learning (teachers and students- teachers). It solved the problem of semantic concepts and self-organization of subject in the space of pedagogical interaction. The following methods are used: semantic analysis and concepts classification, modeling, content of analysis, testing, "repertory grid" by J. Kelly, sociometry and group valuation of the member of the group. Based on the hierarchical model, empirical results of a comparative analysis of the semantic constructs in the system of psychic self-organization of experienced teachers and students and educators are presented.

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STRUZIK, ZBIGNIEW R. « THE WAVELET TRANSFORM IN THE SOLUTION TO THE INVERSE FRACTAL PROBLEM ». Fractals 03, n^o 02 (juin 1995) : 329–50. http://dx.doi.org/10.1142/s0218348x95000266.

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The inverse fractal problem for self-affine functions in R 2 is solved by means of testing the invariance of the wavelet transform of the function. The wavelet maxima bifurcation representation used is derived from the continuous wavelet decomposition and possesses translational and scale invariance necessary to reveal the invariance of the self-affine fractal. Algorithms are presented which give satisfactory results for the self-affine fractal and which potentially can be applied to a variety of fractal types in order to solve the related inverse fractal problem.

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Emam, Tarek G. « Boundary Layer Flow Over a Vertical Cylinder Embedded in a Porous Medium Moving with non Linear Velocity ». WSEAS TRANSACTIONS ON FLUID MECHANICS 16 (10 février 2021) : 32–36. http://dx.doi.org/10.37394/232013.2021.16.4.

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In this work, we consider a steady flow of an incompressible fluid over a cylinder which is semi-infinite. The cylinder is embedded in a porous medium and is considered to move vertically with nonlinear velocity. A system of ordinary differential equations is obtained from the partial differential equations governing the motion using a self-similarity transformation. Such system of ordinary differential equations is solved numerically after obtaining the missed initial conditions. The problem has been solved analytically for the linear velocity case. Numerical and analytical results for such case are given to validate the numerical method used.

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FÜCHSLIN, RUDOLF M., THOMAS MAEKE, UWE TANGEN et JOHN S. McCASKILL. « EVOLVING INDUCTIVE GENERALIZATION VIA GENETIC SELF-ASSEMBLY ». Advances in Complex Systems 09, n^o 01n02 (mars 2006) : 1–29. http://dx.doi.org/10.1142/s0219525906000598.

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We propose that genetic encoding of self-assembling components greatly enhances the evolution of complex systems and provides an efficient platform for inductive generalization, i.e. the inductive derivation of a solution to a problem with a potentially infinite number of instances from a limited set of test examples. We exemplify this in simulations by evolving scalable circuitry for several problems. One of them, digital multiplication, has been intensively studied in recent years, where hitherto the evolutionary design of only specific small multipliers was achieved. The fact that this and other problems can be solved in full generality employing self-assembly sheds light on the evolutionary role of self-assembly in biology and is of relevance for the design of complex systems in nano- and bionanotechnology.

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Резник, Семен, Semen Reznik, Игорь Чемезов et Igor Chyemyezov. « DEVELOPMENT OF TECHNOLOGIES OF SELF-CHECKING AS KEY FUNCTION OF PERSONAL MANAGEMENT ». Russian Journal of Management 6, n^o 1 (30 mai 2018) : 16. http://dx.doi.org/10.29039/article_5b06a2e95d21a1.99934246.

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Self-checking is one of key functions of personal management, allowing to optimize processes of personal activity, to understand whether goals were achieved and tasks are solved, to make if it is necessary, their adjustment. Article is devoted to professional creation of system of self-checking in management of life and activity of business people. Such self-checking is provided with systematic assessment of realization of the vital purposes and the planned affairs. Besides, managers, especially young, have to carry out regularly a self-assessment of level of the personal organization. Such analysis helps to estimate and develop systemically the qualities of self-organization, the ability to operate own life and activity, therefore, to become more effective.

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Kremenetsky, V. « ON THE SELF-SIMILAR HEAT BOUNDARY LAYER PROBLEMS IN MAGNETOHYDRODYNAMICS ». Mathematical Modelling and Analysis 7, n^o 1 (30 juin 2002) : 93–102. http://dx.doi.org/10.3846/13926292.2002.9637182.

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Usually all self‐similar heat boundary layer problems in presence of magnetic field are solved neglecting the Joule heat, created by current, induced in fluid by interaction of velocity and magnetic field. But the analysis of this heat shows that its influence to the temperature field is very important. For vertical flows it is impossible to find self‐similar solution of boundary layer problems due to the Joule heat influence in temperature field. For horizontal flows only two self‐similar boundary layer problems can be formulated: flow near the critical point in magnetic field with the neutral point and in the transverse steady magnetic field.

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Akatsuka, Hiroshi, et Yoshinori Tanaka. « Discussion on Electron Temperature of Gas-Discharge Plasma with Non-Maxwellian Electron Energy Distribution Function Based on Entropy and Statistical Physics ». Entropy 25, n^o 2 (2 février 2023) : 276. http://dx.doi.org/10.3390/e25020276.

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Electron temperature is reconsidered for weakly-ionized oxygen and nitrogen plasmas with its discharge pressure of a few hundred Pa, with its electron density of the order of 1017m−3 and in a state of non-equilibrium, based on thermodynamics and statistical physics. The relationship between entropy and electron mean energy is focused on based on the electron energy distribution function (EEDF) calculated with the integro-differential Boltzmann equation for a given reduced electric field E/N. When the Boltzmann equation is solved, chemical kinetic equations are also simultaneously solved to determine essential excited species for the oxygen plasma, while vibrationally excited populations are solved for the nitrogen plasma, since the EEDF should be self-consistently found with the densities of collision counterparts of electrons. Next, the electron mean energy U and entropy S are calculated with the self-consistent EEDF obtained, where the entropy is calculated with the Gibbs’s formula. Then, the “statistical” electron temperature Test is calculated as Test=[∂S/∂U]−1. The difference between Test and the electron kinetic temperature Tekin is discussed, which is defined as [2/(3k)] times of the mean electron energy U=⟨ϵ⟩, as well as the temperature given as a slope of the EEDF for each value of E/N from the viewpoint of statistical physics as well as of elementary processes in the oxygen or nitrogen plasma.

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Pan, Huizhu, Jintao Song, Wanquan Liu, Ling Li, Guanglu Zhou, Lu Tan et Shichu Chen. « Using the Split Bregman Algorithm to Solve the Self-repelling Snakes Model ». Journal of Mathematical Imaging and Vision 64, n^o 2 (15 janvier 2022) : 212–22. http://dx.doi.org/10.1007/s10851-021-01065-9.

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AbstractPreserving contour topology during image segmentation is useful in many practical scenarios. By keeping the contours isomorphic, it is possible to prevent over-segmentation and under-segmentation, as well as to adhere to given topologies. The Self-repelling Snakes model (SR) is a variational model that preserves contour topology by combining a non-local repulsion term with the geodesic active contour model. The SR is traditionally solved using the additive operator splitting (AOS) scheme. In our paper, we propose an alternative solution to the SR using the Split Bregman method. Our algorithm breaks the problem down into simpler sub-problems to use lower-order evolution equations and a simple projection scheme rather than re-initialization. The sub-problems can be solved via fast Fourier transform or an approximate soft thresholding formula which maintains stability, shortening the convergence time, and reduces the memory requirement. The Split Bregman and AOS algorithms are compared theoretically and experimentally.

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Hazuda, Мykhailo. « ACTIVATING BODIES OF LOCALSELF-GOVERNMENT IN MANAGEMENT OF RENEWABLE NATURAL RESOURCES OF AGRICULTURE ». International Journal of New Economics and Social Sciences 3, n^o 1 (30 juin 2016) : 0. http://dx.doi.org/10.5604/01.3001.0010.4715.

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The paper is dedicated to peculiarities of activating local self-government bodies in management of the processes of use of agricultural natural resources. Urgent problems concerning share of powers between the state and the region are substantiated. It was determined that bodies of local self-government have much less powers in management and control of the use of natural resources including agricultural renewable resources and in the sphere of environmental regulation than local administrations. Perspective tasks are described, which have to be solved by local self-government bodies in the process of managing use of renewable natural resources.

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Cheng, Zhen, Zhihua Chen, Yufang Huang, Xuncai Zhang et Jin Xu. « Implementation of the Timetable Problem Using Self-assembly of DNA Tiles ». International Journal of Computers Communications & ; Control 5, n^o 4 (1 novembre 2010) : 490. http://dx.doi.org/10.15837/ijccc.2010.4.2507.

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DNA self-assembly is a promising paradigm for nanotechnology. Recently, many researches demonstrate that computation by self-assembly of DNA tiles may be scalable. In this paper, we show how the tile self-assembly process can be used for implementing the timetable problem. First the timetable problem can be converted into the graph edge coloring problem with some constraints, then we give the tile self-assembly model by constructing three small systems including nondeterministic assigning system, copy system and detection system to perform the graph edge coloring problem, thus the algorithm is proposed which can be successfully solved the timetable problem with the computation time complexity ofΘ(mn), parallely and at very low cost.

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An, Jiping, Xinhong Li, Zhibin Zhang, Guohui Zhang, Wanxin Man, Gangxuan Hu et Junwei He. « Path Planning for Self-Collision Avoidance of Space Modular Self-Reconfigurable Satellites ». Aerospace 9, n^o 3 (5 mars 2022) : 141. http://dx.doi.org/10.3390/aerospace9030141.

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Space modular self-reconfigurable satellite (SMSRS) is a new type of satellite. The research on self-collision avoidance of SMSRS is important for its on-orbit safety but is not completely solved. This paper offers a new method for joint path planning for self-collision avoidance of SMSRS. Firstly, we establish the collision detection model for SMSRS based on forward kinematics and the spherical nonholonomic envelope to detect the collision occurring in SMSRS. Then, to achieve offline path planning in joint space, we proposed the self-collision avoidance strategy, which splices multiple C-spaces based on the pre-defined joint path into a binary map, and then transforms the binary map into a map with the dangerous potential field, and planning algorithms based on a map with the dangerous potential field is proposed to find the optimal collision-free path. The new method is applied to two cases and both find collision-free joint paths for SMSRS successfully, which demonstrates the feasibility of the method. In addition, this study bridges the gap in the study of self-collision avoidance of super-redundant self-reconfigurable satellites.

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DEVANATHAN, V., et J. S. McCARTHY. « A THERMODYNAMICAL BAG MODEL FOR THE NUCLEON SPIN ». Modern Physics Letters A 11, n^o 02 (20 janvier 1996) : 147–56. http://dx.doi.org/10.1142/s0217732396000175.

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A thermodynamical bag model was developed to study the nucleon spin. Equations of state for the bag are deduced and solved self-consistently. The recent experimental data of the SMC and the E143 collaboration and the Bjorken sum rule are completely explained within the framework of the model.

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