Yoshio Matsuki - Academia.edu (original) (raw)
Papers by Yoshio Matsuki
DOAJ (DOAJ: Directory of Open Access Journals), Nov 30, 2010
Advances in intelligent systems and computing, Nov 2, 2019
The article discusses the algorithms of the Monte Carlo method with Markov chains (MCMC). These a... more The article discusses the algorithms of the Monte Carlo method with Markov chains (MCMC). These are the Metropolis-Hastings and Gibbs algorithms. Descriptions and the main features of the algorithms application are given. The MCMC methods are developed to model sets of vectors corresponding to multidimensional probability distributions. The main application of these methods and algorithms in Bayesian data analysis procedures is directed towards study of posterior distributions. The main procedures of Bayesian data analysis are considered and the features of the application of the Metropolis-Hastings and Gibbs algorithms with different types of input data are considered. Examples of application of the algorithms and methods for their evaluation are provided.
Springer eBooks, Sep 14, 2022
DOAJ (DOAJ: Directory of Open Access Journals), Sep 1, 2013
International Journal of Risk Assessment and Management, 2002
This paper introduces a new learner's self-assessment environment as a computing environment for ... more This paper introduces a new learner's self-assessment environment as a computing environment for human learning (CEHL) that allows comparison of learners' C++ object-oriented programs with those elaborated by the teacher. The subjacent idea is to indirectly compare object-oriented programs through their graphical representations described by UML class and communication diagrams. CEHL allows: (1) the generation of UML diagrams from the learners' programs, and (2) algorithmic matching of programs to measure degrees of similarity and dissimilarity between UML diagrams. The resultant CEHL system has been tested and the results showed significant reliability of the proposed approach.
This study uses the methodology of empirical analysis for analyzing the transient mode of the nuc... more This study uses the methodology of empirical analysis for analyzing the transient mode of the nuclear reactor core, a few second before the explosion at the time of the Chernobyl accident. The parameters were selected from the published articles [1]. A scenario was assumed for this analysis, such as the reduction of the flow rate of the Main Circulation Pump, and regression models were constructed to examine this scenario. The results of the models application were examined, and conclusions were made regarding the reduction of the flow rate of the Main Circulation Pump and the reactivity during the last few seconds to the explosion.В исследовании использована методология эмпирического анализа для изучения переходных процессов активной зоны ядерного реактора за несколько секунд до взрыва во время аварии на Чернобыльской АЭС. Параметры выбраны из опубликованных работ [1]. Сценарием этого анализа предположено снижение скорости потока основного циркуляционного насоса и построены регресс...
In this research we formulated the curvature tensors with the system of spherical polar coordinat... more In this research we formulated the curvature tensors with the system of spherical polar coordinates, which describe the gravitational field and gravitational waves of a black hole; and then we calculated eigenvalues of the curvature tensors to estimate the relative strengths of their components to the stress-energy tensor in Einstein’s field equation. For this simulation, we assumed that the time and the distance interact with each other if we travel from Earth to the inside of the black hole, and then the result of the simulation showed that the gravitational waves carry the same components of the gravitational field of the black hole. On the other hand, when we assumed that the time and the distance are independent, which resembles the situation outside of the boundary of the black hole toward Earth, the curvature tensors are different between those of the gravitational field and the gravitational waves. Upon the results of the simulation we conclude that the gravitational waves t...
Advances in Intelligent Systems and Computing IV, 2019
The article discusses the algorithms of the Monte Carlo method with Markov chains (MCMC). These a... more The article discusses the algorithms of the Monte Carlo method with Markov chains (MCMC). These are the Metropolis-Hastings and Gibbs algorithms. Descriptions and the main features of the algorithms application are given. The MCMC methods are developed to model sets of vectors corresponding to multidimensional probability distributions. The main application of these methods and algorithms in Bayesian data analysis procedures is directed towards study of posterior distributions. The main procedures of Bayesian data analysis are considered and the features of the application of the Metropolis-Hastings and Gibbs algorithms with different types of input data are considered. Examples of application of the algorithms and methods for their evaluation are provided.
Advances in Intelligent Systems and Computing, 2020
The article proposes a methodology for modeling and forecasting economic, financial and environme... more The article proposes a methodology for modeling and forecasting economic, financial and environmental processes, based on the principles of system analysis and combined models, including linear and non-linear regression models, as well as probabilistic models in the form of Bayesian networks. The basis of the methodology is tracking the computational processes of processing statistical data at all stages using the appropriate sets of statistical quality criteria. The high quality of the intermediate and final results is achieved through the application of statistical quality criteria to the data, the adequacy of the model and the quality of forecasts. The methodology is used in a specialized decision support system aimed at analyzing nonlinear non-stationary processes in various fields.
System research and information technologies
This paper reports the result of an investigation of a hypothesis that the melting polar ice of E... more This paper reports the result of an investigation of a hypothesis that the melting polar ice of Earth flowing down to the equatorial region causes volcano eruptions. We assumed a cube inside the spherical body of Earth, formulated a 3-dimensional inertia tensor of the cube, and then simulated the redistribution of the mass that is to be caused by the movement of melted ice on the Earth’s surface. Such mass distribution changes the inertia tensor of the cube. Then, the cube’s rotation inside Earth was simulated by multiplying the Euler angle matrix by the inertia tensor. Then, changes in the energy intensity and the angular momentum of the cube were calculated as coefficients of Hamiltonian equations of motion, which are made of the inertia tensor and sine and cosine curves of the rotation angles. The calculations show that the melted ice increases Earth’s internal energy intensity and angular momentum, possibly increasing volcano eruptions.
System research and information technologies, Mar 20, 2017
This research examines a possibility of a disturbance by Moon's gravitational wave to the Earth's... more This research examines a possibility of a disturbance by Moon's gravitational wave to the Earth's global warming process in comparison with the increase of global volume of carbon dioxide. Because the general theory of relativity that predicts the gravitational wave of a planet has a dimension of 1/(distance)2, we analyzed the data sets of global temperature and global carbon dioxide, with this dimension of gravitational wave using Least Squares Estimation of Linear Classical Regression Model, Generalized Classical Regression Model, and Nonlinear Regression Model. The results suggest that there is a disturbance to the process of global warming by the Moon's gravitational wave. However, there is uncertainty for this conclusion because the Moon's rotational movement around Earth gives different type of distributions of its sample data, while global temperature and carbon dioxide increase proportionally accordingly to available time-series.
2022 IEEE 3rd International Conference on System Analysis & Intelligent Computing (SAIC)
In this article, we show that rotation of a black hole can create antigravity and anti-gravitatio... more In this article, we show that rotation of a black hole can create antigravity and anti-gravitational waves, given that there is a strong gravity in the black hole, which distorts time and space. At first, we derived the curvature tensors upon Einstein’s field equation, using spherical polar coordinates, and then calculated the coefficients of the curvature tensors to simulate the strength of each component of the tensors. It is assumed that the stress-energy tensor, which is located outside of the black hole, can reflect the strength of the gravitational field and the gravitational waves. As the result, we concluded that, if the time and space are distorted in the black hole, the rotation can create antigravity and the anti-gravitational waves. In addition, the result of the simulation shows that the antigravity positively contributes to the stress-energy tensor, which may expand the size of the Universe.Показано, что вращение черной дыры может создать антигравитацию и антигравитаци...
Kyoto University (京都大学)0048新制・論文博士博士(エネルギー科学)乙第12388号論エネ博第55号新制||エネ||45(附属図書館)27323UT51-2009-K697... more Kyoto University (京都大学)0048新制・論文博士博士(エネルギー科学)乙第12388号論エネ博第55号新制||エネ||45(附属図書館)27323UT51-2009-K697(主査)教授 小西 哲之, 教授 手塚 哲央, 教授 石原 慶一学位規則第4条第2項該
System research and information technologies
The study is dedicated to modern topic: the analysis of conditions that lead to distortion of the... more The study is dedicated to modern topic: the analysis of conditions that lead to distortion of the time and space coordinates which results from the general theory of relativity. The main goal of this research is to prove the hypothesis regarding distortion of time and space using nuclear fusion model. For this purpose the simulation instrument is used to imitate a moving proton that hits an electron of a hydrogen atom. The methodology of simulation is based upon calculation of the probabilities of elastic scattering and charge exchange of a proton with a target electron. The distortion is modeled by the functions that relate time and space logarithmically for distorted time and exponentially for distorted space. Such geometry construction is described by the Schrödinger equation using the electron wave function. Then the probability of charge exchange is calculated as the squared coefficient of this wave function in the negative side of the geometry that is divided by the sum of the...
This research examines a possibility of a disturbance by Moon’s gravitational wave to the Earth’s... more This research examines a possibility of a disturbance by Moon’s gravitational wave to the Earth’s global warming process in comparison with the increase of global volume of carbon dioxide. Because the general theory of relativity that predicts the gravitational wave of a planet has a dimension of 1/(distance)2, we analyzed the data sets of global temperature and global carbon dioxide, with this dimension of gravitational wave using Least Squares Estimation of Linear Classical Regression Model, Generalized Classical Regression Model, and Nonlinear Regression Model. The results suggest that there is a disturbance to the process of global warming by the Moon’s gravitational wave. However, there is uncertainty for this conclusion because the Moon’s rotational movement around Earth gives different type of distributions of its sample data, while global temperature and carbon dioxide increase proportionally accordingly to available time-series.Рассматрена возможность нарушения процесса гло...
This research examined the influence of Moon’s gravitational-wave to Earth’s global warming proce... more This research examined the influence of Moon’s gravitational-wave to Earth’s global warming process and the effects of time-trend and cyclic change of the distance between Moon and Earth. In the pervious research [1], we found that the Moon’s gravitational-wave could influence the process of the Earth’s global warming; and, we also found that Moon’s cyclic movement around Earth needed to be further investigated, because it gave a unique pattern of distribution in the data for the empirical analysis; while both global temperature and global carbon-dioxide increase almost linearly in the time-series. In this research we added dummy binary variables that simulate the trend of time and the cyclic changes. As a result we confirmed that the influence of Moon’s gravitational-wave is significant in the process of rising global temperature on Earth.Проверено влияние гравитационной волны на процесс глобального потепления на Земле и эффекты от тенденций по времени и циклических изменений расст...
This research analyzes the process of the explosion of the reactor core of Chernobyl nuclear plan... more This research analyzes the process of the explosion of the reactor core of Chernobyl nuclear plant in April 1986, using the tensor equations. These tensor equations show a movement of a vector in the three dimensional curvature coordinates of time, water flow, and void. The equations shows that this vector moves along the geodesic in the curvature coordinates, which is described by fundamental tensor (gµν), Christoffel symbol (Γαµνσ) and Ricci tensor (Rµν), where µ, ν, σ, α are suffixes that indicate the coordinates. The solution of the tensor equations shows that the geodesic of the vector has a singular point, which describes a turning point of the reactor core from the normal operation to the explosion, which we reported in our previous articles [1, 2].Проанализирован процесс взрыва активной зоны ядерного реактора на Чернобыльской атомной электростанции в апреле 1986 г. при помощи тензорных уравнений, которые демонстрируют движение вектора в трехмерных координатах кривой времени,...
In this research the energy density was calculated and the spin momentum density of Moon’s gravit... more In this research the energy density was calculated and the spin momentum density of Moon’s gravitational waves in the rectilinear coordinates’ system of Moon’s gravity and Earth’s global temperature. At first, we assumed an action principle that combines the gravitational field and gravitational waves, which formulate a closed system, together with Earth’s global temperature. And, then, we calculated the energy densities of those energy field and waves, which are calculated as their variances in the rectilinear coordinates, also to calculate their coefficients and standard errors of the calculated coefficients. The calculated results are consistent with the findings of our previous research [1], which shows the negative contribution of gravitational waves to Earth’s global temperature, while the gravitational field positively contributes to the global temperature. We also calculated spin momentum of Moon’s gravitational waves in the system of rectilinear coordinates.Рассчитано плотн...
DOAJ (DOAJ: Directory of Open Access Journals), Nov 30, 2010
Advances in intelligent systems and computing, Nov 2, 2019
The article discusses the algorithms of the Monte Carlo method with Markov chains (MCMC). These a... more The article discusses the algorithms of the Monte Carlo method with Markov chains (MCMC). These are the Metropolis-Hastings and Gibbs algorithms. Descriptions and the main features of the algorithms application are given. The MCMC methods are developed to model sets of vectors corresponding to multidimensional probability distributions. The main application of these methods and algorithms in Bayesian data analysis procedures is directed towards study of posterior distributions. The main procedures of Bayesian data analysis are considered and the features of the application of the Metropolis-Hastings and Gibbs algorithms with different types of input data are considered. Examples of application of the algorithms and methods for their evaluation are provided.
Springer eBooks, Sep 14, 2022
DOAJ (DOAJ: Directory of Open Access Journals), Sep 1, 2013
International Journal of Risk Assessment and Management, 2002
This paper introduces a new learner's self-assessment environment as a computing environment for ... more This paper introduces a new learner's self-assessment environment as a computing environment for human learning (CEHL) that allows comparison of learners' C++ object-oriented programs with those elaborated by the teacher. The subjacent idea is to indirectly compare object-oriented programs through their graphical representations described by UML class and communication diagrams. CEHL allows: (1) the generation of UML diagrams from the learners' programs, and (2) algorithmic matching of programs to measure degrees of similarity and dissimilarity between UML diagrams. The resultant CEHL system has been tested and the results showed significant reliability of the proposed approach.
This study uses the methodology of empirical analysis for analyzing the transient mode of the nuc... more This study uses the methodology of empirical analysis for analyzing the transient mode of the nuclear reactor core, a few second before the explosion at the time of the Chernobyl accident. The parameters were selected from the published articles [1]. A scenario was assumed for this analysis, such as the reduction of the flow rate of the Main Circulation Pump, and regression models were constructed to examine this scenario. The results of the models application were examined, and conclusions were made regarding the reduction of the flow rate of the Main Circulation Pump and the reactivity during the last few seconds to the explosion.В исследовании использована методология эмпирического анализа для изучения переходных процессов активной зоны ядерного реактора за несколько секунд до взрыва во время аварии на Чернобыльской АЭС. Параметры выбраны из опубликованных работ [1]. Сценарием этого анализа предположено снижение скорости потока основного циркуляционного насоса и построены регресс...
In this research we formulated the curvature tensors with the system of spherical polar coordinat... more In this research we formulated the curvature tensors with the system of spherical polar coordinates, which describe the gravitational field and gravitational waves of a black hole; and then we calculated eigenvalues of the curvature tensors to estimate the relative strengths of their components to the stress-energy tensor in Einstein’s field equation. For this simulation, we assumed that the time and the distance interact with each other if we travel from Earth to the inside of the black hole, and then the result of the simulation showed that the gravitational waves carry the same components of the gravitational field of the black hole. On the other hand, when we assumed that the time and the distance are independent, which resembles the situation outside of the boundary of the black hole toward Earth, the curvature tensors are different between those of the gravitational field and the gravitational waves. Upon the results of the simulation we conclude that the gravitational waves t...
Advances in Intelligent Systems and Computing IV, 2019
The article discusses the algorithms of the Monte Carlo method with Markov chains (MCMC). These a... more The article discusses the algorithms of the Monte Carlo method with Markov chains (MCMC). These are the Metropolis-Hastings and Gibbs algorithms. Descriptions and the main features of the algorithms application are given. The MCMC methods are developed to model sets of vectors corresponding to multidimensional probability distributions. The main application of these methods and algorithms in Bayesian data analysis procedures is directed towards study of posterior distributions. The main procedures of Bayesian data analysis are considered and the features of the application of the Metropolis-Hastings and Gibbs algorithms with different types of input data are considered. Examples of application of the algorithms and methods for their evaluation are provided.
Advances in Intelligent Systems and Computing, 2020
The article proposes a methodology for modeling and forecasting economic, financial and environme... more The article proposes a methodology for modeling and forecasting economic, financial and environmental processes, based on the principles of system analysis and combined models, including linear and non-linear regression models, as well as probabilistic models in the form of Bayesian networks. The basis of the methodology is tracking the computational processes of processing statistical data at all stages using the appropriate sets of statistical quality criteria. The high quality of the intermediate and final results is achieved through the application of statistical quality criteria to the data, the adequacy of the model and the quality of forecasts. The methodology is used in a specialized decision support system aimed at analyzing nonlinear non-stationary processes in various fields.
System research and information technologies
This paper reports the result of an investigation of a hypothesis that the melting polar ice of E... more This paper reports the result of an investigation of a hypothesis that the melting polar ice of Earth flowing down to the equatorial region causes volcano eruptions. We assumed a cube inside the spherical body of Earth, formulated a 3-dimensional inertia tensor of the cube, and then simulated the redistribution of the mass that is to be caused by the movement of melted ice on the Earth’s surface. Such mass distribution changes the inertia tensor of the cube. Then, the cube’s rotation inside Earth was simulated by multiplying the Euler angle matrix by the inertia tensor. Then, changes in the energy intensity and the angular momentum of the cube were calculated as coefficients of Hamiltonian equations of motion, which are made of the inertia tensor and sine and cosine curves of the rotation angles. The calculations show that the melted ice increases Earth’s internal energy intensity and angular momentum, possibly increasing volcano eruptions.
System research and information technologies, Mar 20, 2017
This research examines a possibility of a disturbance by Moon's gravitational wave to the Earth's... more This research examines a possibility of a disturbance by Moon's gravitational wave to the Earth's global warming process in comparison with the increase of global volume of carbon dioxide. Because the general theory of relativity that predicts the gravitational wave of a planet has a dimension of 1/(distance)2, we analyzed the data sets of global temperature and global carbon dioxide, with this dimension of gravitational wave using Least Squares Estimation of Linear Classical Regression Model, Generalized Classical Regression Model, and Nonlinear Regression Model. The results suggest that there is a disturbance to the process of global warming by the Moon's gravitational wave. However, there is uncertainty for this conclusion because the Moon's rotational movement around Earth gives different type of distributions of its sample data, while global temperature and carbon dioxide increase proportionally accordingly to available time-series.
2022 IEEE 3rd International Conference on System Analysis & Intelligent Computing (SAIC)
In this article, we show that rotation of a black hole can create antigravity and anti-gravitatio... more In this article, we show that rotation of a black hole can create antigravity and anti-gravitational waves, given that there is a strong gravity in the black hole, which distorts time and space. At first, we derived the curvature tensors upon Einstein’s field equation, using spherical polar coordinates, and then calculated the coefficients of the curvature tensors to simulate the strength of each component of the tensors. It is assumed that the stress-energy tensor, which is located outside of the black hole, can reflect the strength of the gravitational field and the gravitational waves. As the result, we concluded that, if the time and space are distorted in the black hole, the rotation can create antigravity and the anti-gravitational waves. In addition, the result of the simulation shows that the antigravity positively contributes to the stress-energy tensor, which may expand the size of the Universe.Показано, что вращение черной дыры может создать антигравитацию и антигравитаци...
Kyoto University (京都大学)0048新制・論文博士博士(エネルギー科学)乙第12388号論エネ博第55号新制||エネ||45(附属図書館)27323UT51-2009-K697... more Kyoto University (京都大学)0048新制・論文博士博士(エネルギー科学)乙第12388号論エネ博第55号新制||エネ||45(附属図書館)27323UT51-2009-K697(主査)教授 小西 哲之, 教授 手塚 哲央, 教授 石原 慶一学位規則第4条第2項該
System research and information technologies
The study is dedicated to modern topic: the analysis of conditions that lead to distortion of the... more The study is dedicated to modern topic: the analysis of conditions that lead to distortion of the time and space coordinates which results from the general theory of relativity. The main goal of this research is to prove the hypothesis regarding distortion of time and space using nuclear fusion model. For this purpose the simulation instrument is used to imitate a moving proton that hits an electron of a hydrogen atom. The methodology of simulation is based upon calculation of the probabilities of elastic scattering and charge exchange of a proton with a target electron. The distortion is modeled by the functions that relate time and space logarithmically for distorted time and exponentially for distorted space. Such geometry construction is described by the Schrödinger equation using the electron wave function. Then the probability of charge exchange is calculated as the squared coefficient of this wave function in the negative side of the geometry that is divided by the sum of the...
This research examines a possibility of a disturbance by Moon’s gravitational wave to the Earth’s... more This research examines a possibility of a disturbance by Moon’s gravitational wave to the Earth’s global warming process in comparison with the increase of global volume of carbon dioxide. Because the general theory of relativity that predicts the gravitational wave of a planet has a dimension of 1/(distance)2, we analyzed the data sets of global temperature and global carbon dioxide, with this dimension of gravitational wave using Least Squares Estimation of Linear Classical Regression Model, Generalized Classical Regression Model, and Nonlinear Regression Model. The results suggest that there is a disturbance to the process of global warming by the Moon’s gravitational wave. However, there is uncertainty for this conclusion because the Moon’s rotational movement around Earth gives different type of distributions of its sample data, while global temperature and carbon dioxide increase proportionally accordingly to available time-series.Рассматрена возможность нарушения процесса гло...
This research examined the influence of Moon’s gravitational-wave to Earth’s global warming proce... more This research examined the influence of Moon’s gravitational-wave to Earth’s global warming process and the effects of time-trend and cyclic change of the distance between Moon and Earth. In the pervious research [1], we found that the Moon’s gravitational-wave could influence the process of the Earth’s global warming; and, we also found that Moon’s cyclic movement around Earth needed to be further investigated, because it gave a unique pattern of distribution in the data for the empirical analysis; while both global temperature and global carbon-dioxide increase almost linearly in the time-series. In this research we added dummy binary variables that simulate the trend of time and the cyclic changes. As a result we confirmed that the influence of Moon’s gravitational-wave is significant in the process of rising global temperature on Earth.Проверено влияние гравитационной волны на процесс глобального потепления на Земле и эффекты от тенденций по времени и циклических изменений расст...
This research analyzes the process of the explosion of the reactor core of Chernobyl nuclear plan... more This research analyzes the process of the explosion of the reactor core of Chernobyl nuclear plant in April 1986, using the tensor equations. These tensor equations show a movement of a vector in the three dimensional curvature coordinates of time, water flow, and void. The equations shows that this vector moves along the geodesic in the curvature coordinates, which is described by fundamental tensor (gµν), Christoffel symbol (Γαµνσ) and Ricci tensor (Rµν), where µ, ν, σ, α are suffixes that indicate the coordinates. The solution of the tensor equations shows that the geodesic of the vector has a singular point, which describes a turning point of the reactor core from the normal operation to the explosion, which we reported in our previous articles [1, 2].Проанализирован процесс взрыва активной зоны ядерного реактора на Чернобыльской атомной электростанции в апреле 1986 г. при помощи тензорных уравнений, которые демонстрируют движение вектора в трехмерных координатах кривой времени,...
In this research the energy density was calculated and the spin momentum density of Moon’s gravit... more In this research the energy density was calculated and the spin momentum density of Moon’s gravitational waves in the rectilinear coordinates’ system of Moon’s gravity and Earth’s global temperature. At first, we assumed an action principle that combines the gravitational field and gravitational waves, which formulate a closed system, together with Earth’s global temperature. And, then, we calculated the energy densities of those energy field and waves, which are calculated as their variances in the rectilinear coordinates, also to calculate their coefficients and standard errors of the calculated coefficients. The calculated results are consistent with the findings of our previous research [1], which shows the negative contribution of gravitational waves to Earth’s global temperature, while the gravitational field positively contributes to the global temperature. We also calculated spin momentum of Moon’s gravitational waves in the system of rectilinear coordinates.Рассчитано плотн...