No Impact of Stochastic Galvanic Vestibular Stimulation on Arterial Pressure and Heart Rate Variability in the Elderly Population.Akiyoshi Matsugi,Koji Nagino,Tomoyuki Shiozaki,Yohei Okada,Nobuhiko Mori,Junji Nakamura,Shinya Douchi,Kosuke Oku,Kiyoshi Nagano &YoshikiTamaru -2021 -Frontiers in Human Neuroscience 15:646127.detailsObjectiveNoisy galvanic vestibular stimulation (nGVS) is often used to improve postural stability in disorders, such as neurorehabilitation montage. For the safe use of nGVS, we investigated whether arterial pressure (AP) and heart rate vary during static supine and slow whole-body tilt with random nGVS (0.4 mA, 0.1–640 Hz, gaussian distribution) in a healthy elderly population.MethodsThis study was conducted with a double-blind, sham-controlled, cross-over design. Seventeen healthy older adults were recruited. They were asked to maintain a static supine position on a (...) bed for 10 min, and the bed was tilted up (TU) to 70 degrees within 30 s. After maintaining this position for 3 min, the bed was passively tilted down (TD) within 30 s. Real-nGVS or sham-nGVS was applied from 4 to 15 min. The time course of mean arterial pressure (MAP) and RR interval variability (RRIV) were analyzed to estimate the autonomic nervous activity.ResultnGVS and/or time, including pre-/post-event (nGVS-start, TU, and TD), had no impact on MAP and RRIV-related parameters. Further, there was no evidence supporting the argument that nGVS induces pain, vertigo/dizziness, and uncomfortable feeling.ConclusionnGVS may not affect the AP and RRIV during static position and whole-body tilting or cause pain, vertigo/dizziness, and discomfort in the elderly. (shrink)
On Implicational Intermediate Logics Axiomatizable by Formulas Minimal in Classical Logic: A Counter-Example to the Komori–Kashima Problem.Yoshiki Nakamura &Naosuke Matsuda -2021 -Studia Logica 109 (6):1413-1422.detailsThe Komori–Kashima problem, that asks whether the implicational intermediate logics axiomatizable by formulas minimal in classical logic are only intuitionistic logic and classical logic, has stood for over a decade. In this paper, we give a counter-example to this problem. Additionally, we also give some open problems derived from this result.
Ant Colony Optimization Using Common Social Information and Self-Memory.Yoshiki Tamura,Tomoko Sakiyama &Ikuo Arizono -2021 -Complexity 2021:1-7.detailsAnt colony optimization, which is one of the metaheuristics imitating real ant foraging behavior, is an effective method to find a solution for the traveling salesman problem. The rank-based ant system has been proposed as a developed version of the fundamental model AS of ACO. In the ASrank, since only ant agents that have found one of some excellent solutions are let to regulate the pheromone, the pheromone concentrates on a specific route. As a result, although the ASrank can find (...) a relatively good solution in a short time, it has the disadvantage of being prone falling into a local solution because the pheromone concentrates on a specific route. This problem seems to come from the loss of diversity in route selection according to the rapid accumulation of pheromones to the specific routes. Some ACO models, not just the ASrank, also suffer from this problem of loss of diversity in route selection. It can be considered that the diversity of solutions as well as the selection of solutions is an important factor in the solution system by swarm intelligence such as ACO. In this paper, to solve this problem, we introduce the ant system using individual memories aiming to improve the ability to solve TSP while maintaining the diversity of the behavior of each ant. We apply the existing ACO algorithms and ASIM to some TSP benchmarks and compare the ability to solve TSP. (shrink)
Contractualist Justifiability and Principles for the General Regulation of Behavior.Yoshiki Yoshimura -forthcoming -Journal of Value Inquiry:1-24.detailsOur practice of justification of action seems to be based on comparing agents’ and patients’ reasons for and against action. Standard Scanlonian contractualism, a theory that takes the idea of justifiability to be morally fundamental, evaluates the justifiability of actions on the basis of principles for the general regulation of behavior. In evaluating those principles, reasons for objecting to the widespread performance of acts of relevant types and reasons for objecting to the general authorization of such acts are taken into (...) account. This might seem puzzling at first glance because it seems to differ from our ordinary practice of justification. This puzzlement poses the question of why contractualism employs such principles if it takes the idea of justifiability to be morally fundamental. I argue that the connection between contractualist justifiability and contractualist interpretation of respect for the value of persons provides a rationale for employing principles for the general regulation of behavior. For contractualism, regulating one’s own reasoning and behavior on the basis of contractualist justifiability enacts respect for the value of persons. Contractualists think that to respect the value of persons, we must recognize persons’ rational capacities. Employing principles for the general regulation in evaluating justifiability enables us to do it. In addition, I argue that appreciating contractualism’s two-level character shows that it is compatible with our ordinary practices because our practices do not imply that considerations, such as the general authorization of a type of act, are irrelevant in critical evaluations of grounds for justification. -/- [If you do not have access, the link to Accepted Manuscript is on my personal website. I have added the link to my personal website to the external links in addition to the journal page.] . (shrink)
From molecules to dynamic biological communities.Daniel McDonald,Yoshiki Vázquez-Baeza,William A. Walters,J. Gregory Caporaso &Rob Knight -2013 -Biology and Philosophy 28 (2):241-259.detailsMicrobial ecology is flourishing, and in the process, is making contributions to how the ecology and biology of large organisms is understood. Ongoing advances in sequencing technology and computational methods have enabled the collection and analysis of vast amounts of molecular data from diverse biological communities. While early studies focused on cataloguing microbial biodiversity in environments ranging from simple marine ecosystems to complex soil ecologies, more recent research is concerned with community functions and their dynamics over time. Models and concepts (...) from traditional ecology have been used to generate new insight into microbial communities, and novel system-level models developed to explain and predict microbial interactions. The process of moving from molecular inventories to functional understanding is complex and challenging, and never more so than when many thousands of dynamic interactions are the phenomena of interest. We outline the process of how epistemic transitions are made from producing catalogues of molecules to achieving functional and predictive insight, and show how those insights not only revolutionize what is known about biological systems but also about how to do biology itself. Examples will be drawn primarily from analyses of different human microbiota, which are the microbial consortia found in and on areas of the human body, and their associated microbiomes (the genes of those communities). Molecular knowledge of these microbiomes is transforming microbiological knowledge, as well as broader aspects of human biology, health and disease. (shrink)
Kōshō no seiki: 19-seiki Nihon no kokugaku kōshōha.Yoshiki Ōnuma -2021 - Tōkyō-to Bunkyō-ku: Yoshikawa Kōbunkan.details国学考証派の登場と学問領域を築き深化させた過程を、考証の方法や実践などに着目して追究。近代の実証的学問への継承まで論じる。.
Global Leadership and International Regime: Empirical Testing of Cooperation without Hegemony Paradigm on the Basis of 120 Multilateral Conventions Data Deposited to the United Nations System.L. E. Lien Thi Quynh,Yoshiki Mikami &Takashi Inoguchi -2014 -Japanese Journal of Political Science 15 (4):523-601.detailsThis study is an attempt to construct a quantitative link for international regimes with global leadership. The country's willingness to lead in solving global issues as the first mover in the formation of an international regime is measured and characterized by analyzing their ratification behavior in multilateral conventions deposited to the United Nations which shape of the global community. For this purpose, a set of quantitative indicators, the Index of Global Leadership Willingness and the Global Support Index, was defined and (...) calculated for each country based on its actual ratification year data for 120 multilateral conventions covering global issues such as peace and security, environment, commerce, communication, intellectual property protection, human rights, and labor. By proposing a framework of global leadership analysis, the study seeks to provide an empirical testing of the transformation of global governance towards cooperation without hegemony paradigm. The paper analyses changes in the leadership willingness indices of selected country groups, such as the G3, G7/8, and G20, over the century and finds that the will to drive the international agenda of these groups of leaders is in decline. Moreover, our study provides evidence to argue that our current world is actually without consistent global leadership across domains of the world affairs. Although several countries still show visible leadership in specific policy domains, such as environment and intellectual property, neither the G7/8 nor the G20 was playing a comparable role to those performed by the G3 a hundred years ago. (shrink)
Reflective equilibrium in practice and model selection: a methodological proposal from a survey experiment on the theories of distributive justice.Akira Inoue,Kazumi Shimizu,Daisuke Udagawa &Yoshiki Wakamatsu -2024 -Synthese 203 (5):1-31.detailsIn political philosophy, reflective equilibrium is a standard method used to systematically reconcile intuitive judgments with theoretical principles. In this paper, we propose that survey experiments and a model selection method—i.e., the Akaike Information Criterion (AIC)-based model selection method—can be viewed together as a methodological means of satisfying the epistemic desiderata implicit in reflective equilibrium. To show this, we conduct a survey experiment on two theories of distributive justice, prioritarianism and sufficientarianism. Our experimental test case and AIC-based model selection method (...) demonstrate that the refined sufficientarian principle, a widely accepted principle of distributive justice, is no more plausible than the prioritarian principle. This tells us that some changes of certain intuitions revolving around sufficientarianism should be examined (separately) based on the findings of the survey experiment and AIC model selection. This shows the potential of our approach—both practically and methodologically—as a novel way of applying reflective equilibrium in political philosophy. (shrink)
Luck vs. Capability? Testing Egalitarian Theories.Akira Inoue,Kazumi Shimizu,Daisuke Udagawa &Yoshiki Wakamatsu -2019 -Review of Philosophy and Psychology 10 (4):809-823.detailsThe issue of distributive justice receives substantial amount of attention in our society. On the one hand, we are sensitive to whether and the extent to which people are responsible for being worse off. On the other hand, we are mindful of society’s worst-off members. There has been a debate over luck egalitarianism, which relates to the former concern, and relational egalitarianism, which echoes the latter. By investigating the psychological processes of these two concerns, this paper examines the reliability of (...) the argument that Elizabeth Anderson, a renowned relational egalitarian, presents against luck egalitarianism and for relational egalitarianism. It also considers whether it is possible to support luck egalitarianism and relational egalitarianism simultaneously, using an online experiment. The results of the experiment show that, first, for ordinary people, the luck consideration is as important as the basic capabilities consideration. Second, while real people consider the degree of compensation through the factors of causality and responsibility, the lack of basic capabilities directs them to determine how much victims of bad luck should be compensated. This suggests that pluralist egalitarianism is on the right track. (shrink)
The Trolley Problem and the Ethics of Autonomous Vehicles in the Eyes of the Public: Experimental Evidence.Akira Inoue,Kazumi Shimizu,Daisuke Udagawa &Yoshiki Wakamatsu -2022 - In David Černý, Ryan Jenkins & Tomáš Hříbek,Autonomous Vehicles Ethics: Beyond the Trolley Problem. Oxford University Press. pp. 80-98.detailsThe trolley problem is a classic thought experiment that evokes an ethical dilemma. Thomson’s “bystander” and “footbridge” versions of the trolley problem induce different intuitive judgments about what to choose in the ethical dilemma. However, we can question how robust these intuitive judgments are. We thus conducted an online survey experiment of Thomson’s versions of the trolley problem which showed that more respondents tended to choose not pulling the lever in the bystander version and pushing a person off the bridge (...) in the footbridge version when they believed they were not being watched. These results illustrate that people’s decisions deviate from the social norms in the absence of the public’s attention. To activate the practice of holding the manufacturers to a normative expectation based on the social norms, we suggest the law must be changed. (shrink)
Relaxation‐expansion model for self‐driven retinal morphogenesis.Mototsugu Eiraku,Taiji Adachi &Yoshiki Sasai -2012 -Bioessays 34 (1):17-25.detailsThe generation of complex organ structures such as the eye requires the intricate orchestration of multiple cellular interactions. In this paper, early retinal development is discussed with respect to the structure formation of the optic cup. Although recent studies have elucidated molecular mechanisms of retinal differentiation, little is known about how the unique shape of the optic cup is determined. A recent report has demonstrated that optic‐cup morphogenesis spontaneously occurs in three‐dimensional stem‐cell culture without external forces, indicating a latent intrinsic (...) order to generate the structure. Based on this self‐organizing phenomenon, we introduce the “relaxation‐expansion” model to mechanically interpret the tissue dynamics that enable the spontaneous invagination of the neural retina. This model involves three consecutive local rules (relaxation, apical constriction, and expansion), and its computer simulation recapitulates the optic‐cup morphogenesis in silico. (shrink)
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Effective Fine‐convergence of Walsh‐Fourier series.Takakazu Mori,Mariko Yasugi &Yoshiki Tsujii -2008 -Mathematical Logic Quarterly 54 (5):519-534.detailsWe define the effective integrability of Fine-computable functions and effectivize some fundamental limit theorems in the theory of Lebesgue integrals such as the Bounded Convergence Theorem, the Dominated Convergence Theorem, and the Second Mean Value Theorem. It is also proved that the Walsh-Fourier coefficients of an effectively integrable Fine-computable function form a Euclidian computable sequence of reals which converges effectively to zero. This property of convergence is the effectivization of the Walsh-Riemann-Lebesgue Theorem. The article is closed with the effective version (...) of Dirichlet's test. (shrink)
Ludwig wittgenstein’s philosophy in the light of the diagnosis of Autism.Gustavo Augusto Fonseca Silva -2023 -Griot 23 (1):39-58.detailsPsychiatrists such as Michael Fitzgerald, Christopher Gillberg andYoshiki Ishisaka diagnosed Ludwig Wittgenstein posthumously with Autism Spectrum Disorder (ASD). Taking this diagnosis into account, the present paper discusses how Wittgenstein's philosophy reveals his cognitive difficulties. Wittgenstein's grammatical inquiries are particularly investigated here, highlighting his misunderstandings concerning the use of words – specially, his misunderstandings concerning analogies, which he tended to interpret literally.