排序方式: 共有216条查询结果,搜索用时 15 毫秒
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We would like to introduce the web tutor ORGANON, which aimsto support basic logic courses at the University of West Bohemiain Pilsen (Czech Republic). The application was designed tofulfill two requirements. Firstly, it should help students duringtheir study to practice exercises on their own (providing permanentcontrol during students practicing exercises as wellas answering students questions immediately as they arise).Secondly, it should reduce teachers burden (diminishingthe amount of consultations as well as administrating studentshomework including correcting and grading). The tutor is availableat http://kfi.zcu.cz/lide/dostalova/organon. 相似文献
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《Journal of Applied Logic》2014,12(4):558-569
In this paper we introduce a new deductive framework for analyzing processes displaying a kind of controlled monotonicity. In particular, we prove the cut-elimination theorem for a calculus involving series-parallel structures over partial orders which is built up from multi-level sequents, an interesting variant of Gentzen-style sequents. More broadly, our purpose is to provide a general, syntactical tool for grasping the combinatorics of non-monotonic processes. 相似文献
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Ben Martin 《Australasian journal of philosophy》2015,93(1):61-75
This paper first offers a standard modal extension of dialetheic logics that respect the normal semantics for negation and conjunction, in an attempt to adequately model absolutism, the thesis that there are true contradictions at metaphysically possible worlds. It is shown, however, that the modal extension has unsavoury consequences for both absolutism and dialetheism. While the logic commits the absolutist to dialetheism, it commits the dialetheist to the impossibility of the actual world. A new modal logic AV is then proposed which avoids these unsavoury consequences by invalidating the interdefinability rules for the modal operators with the use of two valuation relations. However, while using AV carries no significant cost for the absolutist, the same isn't true for the dialetheist. Although using AV allows her to avoid the consequence that the actual world is an impossible world, it does so only on the condition that the dialetheist admits that she cannot give a dialetheic solution to all self-referential semantic paradoxes. Thus, unless there are any further available modal logics that don't commit her to the impossibility of the actual world, the dialetheist is faced with a dilemma. Either admit that the actual world is an impossible world, or admit that her research programme cannot give a comprehensive solution to the self-referential paradoxes. 相似文献
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过拟合现象是心理学走向预测科学的重要阻碍。文章综述了机器学习在解决过拟合现象中的价值和实现途径:(1)介绍了过拟合的两种表现形式和现状;(2)分析过拟合的根因,即“高解释力≠高预测力”;(3)厘清机器学习的建模逻辑与核心技术在解决过拟合中的作用;(4)利用样例数据和代码说明机器学习统计思想在模型拟合中的具体应用过程。文章指出心理学应从解决实际问题的角度出发,借鉴机器学习的分析思想,避免过拟合,进而提供更准确更稳定的结论和预测模型。 相似文献
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Communities are engaged in efforts to create a coordinated response to intimate partner violence. Though coordinating councils are commonly employed vehicles for such efforts, research provides only equivocal support regarding their effectiveness. These mixed findings may reflect methodological and conceptual challenges. Specifically, there is an over-reliance on conceptualizing council effectiveness in terms of distal outcomes (e.g., behavior change), rather than the intermediary processes by which councils affect change. A direct assessment of councils' proximal outcomes may highlight change mechanisms. To that end, this study investigates the extent to which councils impact proximal outcomes and examines the processes through which proximal outcomes are interrelated and linked to distal community change. Study findings suggest that perceived proximal outcomes do significantly predict variability in perceived distal community change across councils. Specifically, promotion of social capital and institutionalized change predict achievement of distal community change, and promotion of social capital also predicts achievement of institutionalized change. 相似文献
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New Concepts for New Dynamics: Generating Theory for the Study of Religious Innovation and Social Change 下载免费PDF全文
Gerardo Martí 《Journal for the scientific study of religion》2017,56(1):6-18
The Emerging Church movement (ECM) is sociologically interesting—not due to the size of its membership or the centrality of its congregations. Rather, the ECM is significant because it provides an opportunity to generate new concepts for the study religious innovation and social change. Using theoretical language, the ECM consists of institutional entrepreneurs who drive their religiously concerned movement by continually deconstructing and reframing beliefs, practices, and identities from “mainstream” Christianity while at the same time promoting newly formulated and broadly resonant religious imperatives. As Emerging Christians cultivate new or altered religious practices, these must be continually legitimized. Furthermore, their renegotiated beliefs (heterodoxies) require new forms of organization (alternative congregations). Such action is not the work of isolated individuals, nor is it independent of societal conditions. Ultimately, the ECM consists of Emerging Christians who creatively operate through diffuse network structures across wide geographic spaces and among disparate social groups to enact a collective institutional entrepreneurship that seeks to reimagine the assumptions of conventional Christian congregational life. 相似文献
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The aim of this paper is to propose a two-dimensional hybrid logic in order to formalize inferences containing both spatial and temporal propositions. The semantic idea behind the proposal is to name both horizontal and vertical lines in a 2D-plane by two kinds of nominals. This is a generalization of the idea of naming a point in one-dimensional hybrid logic. I give an axiomatization of the proposed two-dimensional hybrid logic and show that it enjoys a general completeness result (called pure completeness) with respect to product Kripke frames. Moreover, in order to capture -frames studied by R.H. Thomason (1984), I introduce the notion of a dependent product frame, which enables us to represent the dependence of space over time. I also give a complete axiomatization of this dependent two-dimensional hybrid logic, and, as a corollary, reveal that a hybridization of -logic enjoys strong completeness. 相似文献
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