Firstly I characterize Simple Partial Logic (SPL) as the generalization and extension of a certain two-valued logic. Based on the characterization I present two definitions of validity in SPL. Finally I show that given my characterization these two definitions are more appropriate than other definitions that have been prevalent, since both have some desirable semantic properties that the others lack.

Background: There are many reports in the mass media and scientific literature about child abuse caused by parents. Medical practitioners also are concerned about child abuse and need to grapple with the prevention and early detection of child abuse when working in medical facilities. Aim: The aim of this descriptive study was to explore the relationship between maternal and child factors contributing to child abuse. Methods: A sample of 50 multiparas (mothers with more than 1 child) in a 48-bed postpartum (...) hospital unit in Okinawa prefecture were asked to fill out an anonymous questionnaire regarding the relationship between mothers and their first child in September, 2007. The questionnaire contained 30 items of physical punishment that are quoted from “The Handbook of Correspondence to Child Abuse” (Ministry of Health, Labor and welfare in Japan), 24 items relating to maternal factors and 22 items to child factors, plus items related to mothers’ satisfaction with the health guidance given in the hospital. Data were analyzed using JMP (ver. 14.2; SAS Institute Inc., Cary, NC, U.S.). The significance level was set at 0.05. Results: Forty-one (82%) questionnaires were analyzed. Of the 41 valid responses, 19 mothers reported abusing their children. Child factors contributing to the abuse included the first child’s regression to infantile behavior, bullying younger brothers or sisters and being rough and violent to their friends. The significant maternal factor leading to abuse was the belief that mothers were irritated by their child. Conclusion: A first child’s developmental difficulties had a significant relationship with the harsh punishment by their mothers. The mothers need to understand their child’s developmental behavior and provide a favorable environment for nurturing young children. (shrink)

Łukasiewicz has often been criticized for his motive for inventing his three-valued logic, namely the avoidance of determinism. First of all, I want to show that almost all of the critcism along this line was wrong. Second I will indicate that he made mistakes, however, in constructing his system, because he had other motives at the same time. Finally I will propose some modification of his system and its interpretation which can attain his original purpose in some sense.

Simple partial logic (=SPL) is, broadly speaking, an extensional logic which allows for the truth-value gap. First I give a system of propositional SPL by partializing classical logic, as well as extending it with several non-classical truth-functional operators. Second I show a way based on SPL to construct a system of tensed ontology, by representing tensed statements as two kinds of necessary statements in a linear model that consists of the present and future worlds. Finally I compare that way with (...) other two ways based on Łukasiewicz’s three-valued logic and branching temporal logic. (shrink)

Firstly I define a hole as a dependent matter-less endurant, which is a little modification of Casati and Varzi’s definition. Adopting this definition, holes seem to invite three problems about causation: (1)causal closure, (2)ungrounded disposition and (3)causal overdetermination. I will defend my definition against all these problems by showing that holes are limiting cases of physical endurants rather than their opposition and that they have causal powers in a broad sense.

Recently, Bourne constructed a system of three-valued logic that he supposed to replace Łukasiewicz’s three-valued logic in view of the problems of future contingents. In this paper, I will show first that Bourne’s system makes no improvement to Łukasiewicz’s system. However, finding some good motivations and lessons in his attempt, next I will suggest a better way of achieving his original goal in some sense. The crucial part of my way lies in reconsidering the significance of the intermediate truth-value so (...) as to reconstruct Łukasiewicz’s three-valued logic as a kind of extensional modal logic based on partial logic. (shrink)

In this paper I give consideration to some apparent impossibilities for the time travelers to the past. After criticizing the views of D. Lewis and K. Vihvelin, I will show in what sense they are really impossible.

M. Johnston proposed an adverbialist solution to the problem of intrinsic change of enduring things. D. Lewis interpreted it as a way of tensing the copula. In his view, it has the defect of replacing having a property simpliciter by standing in a triadic relation to a property and a time, and so is threatened by Bradley’s Regress. I agree with Lewis on requiring having a property to be non-relational, while I disagree with him on restricting it to having simpliciter. (...) I tense the copula non-relationally and yet more seriously than Johnston, by characterizing tense as a copulative de re modality concerning endurance, which I relate to R. Taylor’s ‘pure becoming’. I will show that my way gives a better solution to the problem of intrinsic change than those by other endurantists, because of its close connection to an account of tense, endurance and becoming. (shrink)

Casati and Varzi have developed a theory of boundary based on extensional mereotopology and the distinction between fiat and bona fide boundaries. Firstly, I point out some problems in their theory that are related to the contact of bodies. Next, I propose a way of classification of boundaries into four kinds based on substance ontology and an alternative distinction between potential and actual boundaries. Finally, I will show that my way of classification makes it possible to solve the problems above.

There are two types of theories regarding many worlds: one is modal, while the other is temporal. The former regards reality as consisting of many possible worlds, while the latter holds that reality consists of many momentary worlds, which are usually called moments. I compare these two theories, paying close attention to the concept of transworld identity and compare trans-possible world identity with trans-momentary world identity (or transmoment identity). I characterize time from the point of many-worlds view, believing this to (...) be one of the best ways of grasping the reality of time. First, I show that there is reason to adopt the many-worlds view because transworld identity is meaningful for both of them, while it is not for space. Second, I argue that transmoment identity is different from transpossible world identity concerning reality. The former is a realistic relation, while the latter is not. Thus, I find that the reality of time is in the relation of transmoment identity. Such a view, I contend, has merit on the basis that it recognizes the reality of time in a sense that is not true of space. (shrink)

This book is a collection of all the papers published in the special issue “Artificial Intelligence, Robots, and Philosophy,” Journal of Philosophy of Life, Vol.13, No.1, 2023, pp.1-146. The authors discuss a variety of topics such as science fiction and space ethics, the philosophy of artificial intelligence, the ethics of autonomous agents, and virtuous robots. Through their discussions, readers are able to think deeply about the essence of modern technology and the future of humanity. All papers were invited and completed (...) in spring 2020, though because of the Covid-19 pandemic and other problems, the publication was delayed until this year. I apologize to the authors and potential readers for the delay. I hope that readers will enjoy these arguments on digital technology and its relationship with philosophy. *** -/- Contents*** -/- Introduction : Descartes and Artificial Intelligence; Masahiro Morioka*** -/- Isaac Asimov and the Current State of Space Science Fiction : In the Light of Space Ethics; Shin-ichiro Inaba*** -/- Artificial Intelligence and Contemporary Philosophy : Heidegger, Jonas, and Slime Mold; Masahiro Morioka*** -/- Implications of Automating Science : The Possibility of Artificial Creativity and the Future of Science; Makoto Kureha*** -/- Why Autonomous Agents Should Not Be Built for War; István Zoltán Zárdai*** -/- Wheat and Pepper : Interactions Between Technology and Humans; Minao Kukita*** -/- Clockwork Courage : A Defense of Virtuous Robots; Shimpei Okamoto*** -/- Reconstructing Agency from Choice; Yuko Murakami*** -/- Gushing Prose : Will Machines Ever be Able to Translate as Badly as Humans?; Rossa Ó Muireartaigh***. (shrink)

Abstract: This study is aimed to examine the role of youth in National Assembly Elections-2013 in Islamabad. After May,11, 2013 General Elections a Elections commission of Pakistan reported that due to involvement of youth the huge turnout in the elections first time in the Pakistanâ’s history. This study also examines this claim and analyzes different factors due to which young people are more involved in political process. It addresses different mobilization trends of political parties create interest among youth; their attitude (...) towards the political institutions; their perception about the effectiveness of political parties and politicians; and their need to have a platform for their political ideology. This study also examines whether Socio-political culture of politics in Pakistan is responsible in shaping young peoples’ values and views on politics. Furthermore, it also focused the uses of media and Specially social media among the youth for campaigns by different political parties. It is also highlighted in the research that youth is seems frustrate before elections-2013. This descriptive study is qualitative in nature. This study collected a sample of 50 youth from educational institutions as well as from kachi abadis of Islamabad. The findings reveal that young people were frustrate due to traditional politics in Pakistan, lack of political education and political socialization. This study finds out that young people are aware of political scenario and they do take interest in political talk shows in the media but this awareness and interest does not always translate into formal or conventional engagement with political party structures through membership etc. The conclusion that new mobilization trends specially social media attract the young people towards National Assembly Elections and increasing the political interest which also leads towards higher voter turnout in the General elections-2013. (shrink)