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A Study on Flow Structure around a Bridge Beam and Behavior of Sea Water Mist

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Open Journal of Fluid Dynamics 2017年第3期7卷 340-347页

作者： Masaaki ishikawa Mechanical Engineering Program University of the Ryukyus Okinawa Japan

Okinawa in the subtropical islands enclosed in the ocean has a problem that corrosion of structures progresses quickly because of high temperature, high humidity and adhesion of sea-water mists flying from sea. Author is interested in corrosion of bridge made of weatherability steel. Therefore, it needs to investigate the flow structure around bridge beams and behavior of sea-water mist (droplet). In this paper, flow visualization and PIV are attempted to understand the flow structures around bridge beams and, furthermore, numerical approach of motion of droplets is attempted to understand the collision of sea-water mists on the bridge wall.

关键词： Flow Visualization PIV Behavior of Sea-Water Mist

Philosophy of Science for Scientists: The Probabilistic Interpretation of Science

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Journal of Quantum Information Science 2019年第3期9卷 123-154页

作者： Shiro ishikawa Department of Mathematics Faculty of Science and Technology Keio University Yokohama Japan

Recently we proposed “quantum language” (or, “the linguistic Copenhagen interpretation of quantum mechanics”, “measurement theory”) as the language of science. This theory asserts the probabilistic interpretation of science (=the linguistic quantum mechanical worldview), which is a kind of mathematical generalization of Born’s probabilistic interpretation of quantum mechanics. In this paper, we consider the most fundamental problems in philosophy of science such as Hempel’s raven paradox, Hume’s problem of induction, Goodman’s grue paradox, Peirce’s abduction, flagpole problem, which are closely related to measurement. We believe that these problems can never be solved without the basic theory of science with axioms. Since our worldview (=quantum language) has the axiom concerning measurement, these problems can be solved easily. Thus we believe that quantum language is the central theory in philosophy of science. Hence there is a reason to assert that quantum language gives the mathematical foundations to science.

关键词： Philosophy of Science Linguistic Copenhagen Interpretation Probabilistic Interpretation of Science Raven Paradox Problem of Induction Grue Paradox Abduction Flagpole Problem

Estimation of herbage intake and digestibility of grazing sheep in Zhenglan Banner of Inner Mongolia by using n-alkanes

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Animal Nutrition 2015年第4期1卷 324-328页

作者： Changqing Li Alatengdalai Shuyuan Xue Atsushi Tajima Naoto ishikawa Faculty of Life and Environmental Sciences University of Tsukuba Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences

To reveal the seasonal dynamics of herbage intake, diet composition and digestibility and clarify the relationship of those with herbage nutrient and botanical composition of grazing sheep in Zhenglan Banner of Inner Mongolia, the n-alkane technique was used to test in sheep grazed during June, August and December. The results showed that the sheep mainly ate Fringed sagebrush, Stipa krylovii and Carex in proportions of 33.5,17.9 and 21.2%, respectively, in spring. In summer, the sheep consumed cleistogenes,Potentilla tanacetifolia, Thyme, etc; the intake of Fringed sagebrush, Carex and Stipa declined. In winter,Fringed sagebrush accounted for 50.1% of herbage intake, and the intakes of Cleistogenes and Stipa krylovii increased to 15.3 and 18.4%, respectively. Herbage intake by the sheep in spring was 1.8 kg DM/d, and digestibility was 71.4%. Herbage intake and digestibility decreased slightly to 1.7 kg DM/d and 68.4%during the summer, respectively and decreased significantly to 1.2 kg DM/d and 36.4% in winter. There were significant correlations between diet composition and CP content in winter, diet composition and botanical composition in summer. A highly positive correlation between herbage intake and digestibility was observed in grazing sheep.

关键词： N-alkane technique Diet composition Grazing sheep Herbage intake

Monty Hall Problem and the Principle of Equal Probability in Measurement Theory

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Applied Mathematics 2012年第7期3卷 788-794页

作者： Shiro ishikawa Department of Mathematics Faculty of Science and Technology Keio University Yokohama Japan

In this paper, we study the principle of equal probability (i.e., unless we have sufficient reason to regard one possible case as more probable than another, we treat them as equally probable) in measurement theory (i.e., the theory of quantum mechanical world view), which is characterized as the linguistic turn of quantum mechanics with the Copenhagen interpretation. This turn from physics to language does not only realize theremarkable extensionof quantum mechanicsbut alsoestablish the method of science. Our study will be executed in the easy example of the Monty Hall problem. Although our argument is simple, we believe that it is worth pointing out the fact that the principle of equal probability can be, for the first time, clarified in measurement theory (based on the dualism) and not the conventional statistics (based on Kolmogorov’s probability theory).

关键词： Linguistic Interpretation Quantum and Classical Measurement Theory Philosophy of Statistics Fisher Maximum Likelihood Method Bayes’ Theorem

Quantum Mechanics and the Philosophy of Language:Reconsideration of Traditional Philosophies

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Journal of Quantum Information Science 2012年第1期2卷 2-9页

作者： Shiro ishikawa Department of Mathematics Faculty of Science and TechnologyKeio UniversityYokohamaJapan

Recently we proposed “a new interpretation of quantum mechanics (called quantum and classical measurement theory)” in this journal (JQIS: Vol. 1, No. 2), which was characterized as the metaphysical and linguistic turn of quantum mechanics. This turn from physics to language does not only realize the remarkable extension of quantum mechanics but also yield the quantum mechanical world view (i.e., the philosophy of quantum mechanics). And thus, the turn urges us to dream that traditional philosophies (i.e., Parmenides, Plato, Aristotle, Descartes, John Locke, Berkeley, Hume, Kant, Saussure, Wittgenstein, etc.) can be understood in the quantum mechanical world view. This dream will be challenged in this paper. We, of course, know that most scientists are skeptical to philosophy. Still, we can expect that readers find a good linguistic philosophy (i.e. philosophy of language) in quantum mechanics.

关键词： Copenhagen Interpretation Operator Algebra Language Game Mind-Body Problem Space-Time Problem Leibniz-Clarke Correspondence McTaggart’s Paradox Paradox Schrodinger’s Cat Zeno’s Paradoxes Syllogism EPR-Paradox

Frost heave analysis of ballasted track above box culvert and its influence on train vibration

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Research in Cold and Arid Regions 2017年第3期9卷 229-235页

作者： Bin Luo Hao Lai Tatsuya ishikawa Tetsuya Tokoro Graduate School of Engineering Hokkaido University Faculty of Engineering Hokkaido University National Institute of Technology Tomakomai College

The uneven frost heave of frost-susceptible subgrade soil causes track irregularity,which highly enhances train vibration and affects the comfort and safety of railway *** paper presents a coupled thermo-hydro-mechanical(THM)analysis for the freezing behavior of railway located above a box *** vertical acceleration of the vehicle,an indicator of riding comfort,is predicted through a vehicle dynamic *** results reveal that the existence of a box culvert changes the subgrade thermal pattern,leading to a deeper frost penetration *** frost heave amount above the box culvert is larger than the adjacent section,resulting in uneven track structure upheave and track *** frostinduced track irregularity highly affects train vibration.

关键词： railway box culvert coupled analysis uneven frost heave track irregularity train vibration

43 Gbit/s x 54 ch Transmission with Dense 75 GHz Channel Spacing in NRZ Modulation Scheme

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光学学报 2003年第S1期23卷 564-565页

作者： Kentaro Nakamura Hiroki Ooi Takafumi Terahara Takeshi Hoshida George ishikawa Fujitsu Laboratories Ltd. 4-1-1 Kamikodanaka Nakahara-ku Kawasaki 211-8588 JapanFujitsu Laboratories Ltd. 4-1-1 Kamikodanaka Nakahara-ku Kawasaki 211-8588 JapanFujitsu Laboratories Ltd. 4-1-1 Kamikodanaka Nakahara-ku Kawasaki 211-8588 JapanFujitsu Laboratories Ltd. 4-1-1 Kamikodanaka Nakahara-ku Kawasaki 211-8588 JapanFujitsu Laboratories Ltd. 4-1-1 Kamikodanaka Nakahara-ku Kawasaki 211-8588 Japan

We demonstrated 2.16-Tbit/s (43 Gbit/s x 54 ch) WDM transmission over 600 km of standard single-mode fiber with high spectral efficiency 0.53 bit/s/Hz using optimized optical mux/demux filters for 75-GHz channel spaci... 详细信息

关键词： NRZ with Gbit/s x 54 ch Transmission with Dense 75 GHz Channel Spacing in NRZ Modulation Scheme in GHz

Bell’s Inequality Should Be Reconsidered in Quantum Language

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Journal of Quantum Information Science 2017年第4期7卷 140-154页

作者： Shiro ishikawa Department of Mathematics Faculty of Science and Technology Keio University Yokohama Japan

Bell’s inequality itself is usually considered to belong to mathematics and not quantum mechanics. We think that this is making our understanding of Bell’ theory be confused. Thus in this paper, contrary to Bell’s spirit (which inherits Einstein’s spirit), we try to discuss Bell’s inequality in the framework of quantum theory with the linguistic Copenhagen interpretation. And we clarify that the violation of Bell’s inequality (i.e., whether or not Bell’s inequality holds) does not depend on whether classical systems or quantum systems, but depend on whether a combined measurement exists or not. And further we conclude that our argument (based on the linguistic Copenhagen interpretation) should be regarded as a scientific representation of Bell’s philosophical argument (based on Einstein’s spirit).

关键词： Bohr-Einstein Debates Bell’s Inequality Combined Observable Linguistic Copenhagen Interpretation Quantum Language

A New Interpretation of Quantum Mechanics

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Journal of Quantum Information Science 2011年第2期1卷 35-42页

作者： Shiro ishikawa 不详

The Copenhagen interpretation is the most authorized interpretation of quantum mechanics, but there are a number of ideas that are associated with the Copenhagen interpretation. It is ceratin that this fact is not necessarily desirable. Thus, we propose a new interpretation of measurement theory, which is the linguistic aspect (or, the mathematical generalization) of quantum mechanics. Although this interpretation is superficially similar to a part of so-called Copenhagen interpretation, we show that it has a merit to be applicable to both quantum and classical systems. For example, we say that Bell’s inequality is broken even in classical systems.

关键词： the Copenhagen Interpretation Quantum and Classical Measurement Theory the Law of Large Numbers Maximum Likelihood Estimation Kolmogorov Extension Theorem Wavefunction Collapse Bell’s Inequality