Crucial Premise Research Articles

Study on the effective drainage range of long horizontal borehole for goaf gas drainage

AbstractLaying long horizontal borehole (LHB) in mining‐induced strata fractures for coal‐bed gas drainage in the goaf is a pivotal method for eliminating safety hazards, preventing atmospheric pollution, and realizing gas utilization. A crucial premise of this method is to determine the effective drainage range of the borehole, a key parameter directly affecting boreholes spacing and drainage efficiency. In this study, a model of gas seepage during LHB drainage within a circular equipotential boundary was presented, and the complex variable function theory and the mirror principle were adopted for deriving the complex potential function of gas flow under the condition of LHB drainage and the drainage volume function of a single center borehole. Besides, the main indicator to determinate the effective drainage range of LHB was given. Specifically, the indicator refers to the distance between the turning point (the point at which the change rate of the gas flow velocity is −0.002 around the borehole) and the center of the borehole. Subsequently, numerical simulation was conducted to obtain the effective drainage range of LHB within mining‐induced fractures of overlying strata, that is, 4 m < r < 7 m. Furthermore, discussion of the effective drainage range of LHB was carried out by analyzing gas flow velocity distributions and LHB drainage volumes. A case study demonstrates that a double‐borehole layout with a 10 m spacing can effectively control pressure‐relief gas in the goaf. Meanwhile, such a layout can achieve well‐balanced drainage efficiency of each borehole with a minimal difference of 0.31 m3 min−1, which is only about 7.9% of the average drainage volume of the two boreholes. The above results verify that the determined effective drainage range of LHB is reasonable. The research results can provide references for determining the drainage range of LHB in multi‐borehole layout of coal mines, and then determining the spacing of LHBs arrangement, thereby improving the efficiency of gas extraction.

The Fundamental Argument without any garbage

AbstractRik Peels's (2017) Fundamental Argument is an important argument against epistemic scientism. The crucial premise of the Fundamental Argument is that if nonscientific sources of belief did not provide us with knowledge, neither could the sciences. But, the sciences do provide us with knowledge. Thus, epistemic scientism is false. This paper defends Peels's argument against recent criticisms. In particular, Hietanen and colleagues criticize Peels's argument for resting on what they call the “garbage in, garbage out” principle (GIGO). This paper strengthens their attacks on the GIGO principle. It shows, however, that we don't need the GIGO principle to motivate the crucial premise of the Fundamental Argument. Instead, it argues that the crucial premise is true for the following reasons: scientific knowledge is the result of successful inquiry; at some point we lacked scientific knowledge; and, we cannot successfully inquire without some prior knowledge.

Principled pragmatism: A Latin American contribution for foreign policy analysis?

The key purpose of this paper is to identify key Latin American theories proposed to study foreign policy. The essay points out that Latin America has made a significant contribution to foreign policy analysis. The most important conceptual contribution in the field is the concept of principled pragmatism. A crucial premise is that Latin American nations resort to this type of policy to come to agreement with the United States, address domestic issues, advance national interests, and cope with economic problems. The paper is divided into four sections. The first describes key analytical models and theoretical approaches created to explain foreign policy. The second identifies the Latin American thought on this subject. The third section explains the concept of principled pragmatism. This approach stems from the models and theories explained in the second section and from the Latin American thinking described in the third section. The last segment explains the case study of Cuban foreign policy in the early 1960s using the notion of principled pragmatism.

Research progress and prospects of urban resilience in the perspective of climate change

The natural hazards caused by climate change have a significant impact on the production and life of urban residents, enhancing urban resilience is an important way to cope with climate disasters and ensure the safety of urban systems. Based on the “urban resilience” research relevant literature, the paper applies bibliometric analysis software to reveal the research hotspots and evolution trends of urban resilience in the perspective of climate change. The results indicate that the main research contents can be summarized into four aspects: ⅰ) influencing factors of urban resilience; ii) evaluation index and method of urban resilience; iii) the impact of climate change on urban resilience; ⅳ) Enhancing urban resilience in response to climate change. Finally, potential directions for future research on urban resilience were proposed, multi-dimensional research on urban resilience should be carried out from aspects of theoretical development, urban planning based on resilience mechanisms should be carried out from the perspective of planning practice, and innovation and reform should be carried out in policy implementation and urban management. Accurately understanding the conceptual connotation and construction mechanism of urban resilience is a crucial premise for climate mitigation and adaptation. Relevant research conclusions can provide useful reference for theoretical research and spatial planning of resilient cities.

French Chambers of Commerce and Industry as Participants in Local Collaborative Governance and Collaborative Management

Local governance continues to be one of the key concepts in the contemporary approach to the functioning of local government, administration, and public management. The most crucial premise of this concept is the interactive way of exercising power, where various actors identify and implement joint projects, including residents, community organizations, and public and private institutions. Despite significant interest in this concept, it needs further analysis and refinement. In academia, the lack of conceptual clarity makes it difficult to analyze and identify the differences in collaborative governance and management processes. In practice, the concept’s full potential is not recognized, which hinders its application in local decision-making. An attempt has been made to fill this research gap by analyzing the role of French chambers of commerce and industry as participants in local collaborative governance and collaborative management. Chambers of commerce and industry have a long tradition and are a permanent element of the French political system. Their current status is the outcome of a long historical process and institutional development closely linked to France’s significant political and economic changes. Through literature and data analysis, as well as the study of documents, selected aspects of the activity of chambers of commerce and industry in local collaborative governance and collaborative management are presented, as well as identifying the challenges faced by these institutions in the process of collaboration with local authorities and other stakeholders.

Lucky artists

AbstractImagine an artist creating new work, a painter applying paint to canvas with a brush, for example. Assuming she acts intentionally, is she responsible for the work she creates? Is she responsible, in particular, for whatever value her finished work has? In the first part of the paper, I formulate an argument for the claim she is not; I call this the Luck Argument. According to that argument, an important aspect of the work's value is due to luck, so not something for which the artist is responsible. I then go on to challenge the Luck Argument. I suggest that intentional control is not the only type of control artists exercise over their bodily activity. There is another type, which I call receptive control. The concept of receptive control makes it possible to challenge a crucial premise in the Luck Argument.

Clinical usefulness of linked color imaging in identifying Helicobacter pylori infection: A systematic review and meta-analysis.

Accurate diagnosis of Helicobacter pylori (H. pylori) infection status is a crucial premise for eradication therapy, as well as evaluation of risk for gastric cancer. Recent progress on imaging enhancement endoscopy (IEE) made it possible to not only detect precancerous lesions and early gastrointestinal cancers but also to predict H. pylori infection in real time. As a novel IEE modality, linked color imaging (LCI) has exhibited its value on diagnosis of lesions of gastric mucosa through emphasizing minor differences of color tone. To compare the efficacy of LCI for H. pylori active infection vs conventional white light imaging (WLI). PubMed, Embase, Embase and Cochrane Library were searched up to the end of April 11, 2022. The random-effects model was adopted to calculate the diagnostic efficacy of LCI and WLI. The calculation of sensitivity, specificity, and likelihood ratios were performed; symmetric receiver operator characteristic (SROC) curves and the areas under the SROC curves were computed. Quality of the included studies was chosen to assess using the quality assessment of diagnostic accuracy studies-2 tool. Seven original studies were included in this study. The pooled sensitivity, specificity, positive likelihood rate, and negative likelihood rate of LCI for the diagnosis of H. pylori infection of gastric mucosa were 0.85 [95% confidence interval (CI): 0.76-0.92], 0.82 (95%CI: 0.78-0.85), 4.71 (95%CI: 3.7-5.9), and 0.18 (95%CI: 0.10-0.31) respectively, with diagnostic odds ratio = 26 (95%CI: 13-52), SROC = 0.87 (95%CI: 0.84-0.90), which showed superiority of diagnostic efficacy compared to WLI. Our results showed LCI can improve efficacy of diagnosis on H. pylori infection, which represents a useful endoscopic evaluation modality for clinical practice.

Principled pragmatism: A Latin American contribution for foreign policy analysis?

The key purpose of this paper is to identify key Latin American theories proposed to study foreign policy. The essay points out that Latin America has made a significant contribution to foreign policy analysis. The most important conceptual contribution in the field is the concept of principled pragmatism. A crucial premise is that Latin American nations resort to this type of policy to come to agreement with the United States, address domestic issues, advance national interests, and cope with economic problems. The paper is divided into four sections. The first describes key analytical models and theoretical approaches created to explain foreign policy. The second identifies the Latin American thought on this subject. The third section explains the concept of principled pragmatism. This approach stems from the models and theories explained in the second section and from the Latin American thinking described in the third section. The last part explains the case study of Cuban foreign policy in the early 1960s using the notion of principled pragmatism.

Wittgenstein and Stenlund on Mathematical Symbolism

In recent work, Sören Stenlund (2015) contextualizes Wittgenstein’s philosophy of mathematics as aligned with the tradition of symbolic mathematics. In the early modern era, mathematicians began using purely formal methods disconnected from any obvious empirical applications, transforming their subject into a symbolic discipline. With this, Stenlund argues, they were freeing themselves of ancient ontological presuppositions and discovering the ultimately autonomous nature of mathematical symbolism, which eventually formed the basis for Wittgenstein’s thinking. A crucial premise of Wittgenstein’s philosophy of mathematics, on this view, is that the development of mathematical concepts is independent of any ontological implications and occurs in principle without normative connections to empirical applicability. This paper critically examines this narrative and arrives at the conclusion that Stenlund’s view of mathematical progress is in stark contrast to the later Wittgenstein’s writing, which emphasizes links between symbolisms and their applications.

Thomasson’s defence of easy arguments

According to Amie Thomasson, most of the existence questions that concern ontologists can be easily answered using trivial arguments from uncontroversial premises. In this paper, I examine Thomasson’s main argument for this significant and striking thesis, focusing on the crucial premise that sortal terms have application conditions. I argue that Thomasson’s defence of this premise fails to support it. I also argue that it faces a serious objection.

An improved multiplicative acceptability consistency-driven group decision making with triangular fuzzy reciprocal preference relations

Triangular fuzzy reciprocal preference relation (TFRPR) is one of the most effective tools to express the vague and uncertain preferences of decision makers in group decision making (GDM). Consistency of TFRPRs is a crucial premise for reasonable and reliable decision-making. To do so, this study develops an improved multiplicative acceptability consistency-driven GDM with TFRPRs. By analyzing the composition of TFRPRs, a multiplicative consistency index and the corresponding threshold are defined to measure whether a TFRPR is acceptably consistent. The consistency measurement reflects the essential traits of triangular fuzzy numbers, which fully considers the multiplicative consistency of modal values and the multiplicative consistency of geometric mean based on central tendency. Subsequently, three inconsistent TFRPR cases are analyzed, and the algorithm based on mathematical derivation and a linear programming model is presented to repair the inconsistency of TFRPRs. As per the multiplicative acceptability consistency degree (MACD) of TFRPRs, an MACD-induced ordered weighted averaging (MACD-IOWA) operator is proposed to aggregate individual TFRPRs into group TFRPR. The essence principle is that the larger the MACD value, the higher the decision maker’s weight. Finally, a case study, comparative analysis and discussions are given to verify the feasibility and validity of the proposed methods.

Fuller’s Clock: A Case for Legal Non-Positivism in Artefactual Theory of Law1

This article covers the traditional problems of the philosophy of law: the controversies between realism and normativism, on the one hand, and positivism and non-positivism, on the other. The author, adopting the ontological perspective of the artefactual theory of law, attempts to attain two research aims. First, he argues that artefactual theory of law paves the way towards a moderate position overcoming realism-normativism duality. Second, he advocates the thesis that the supposedly ontological difference between positivist and non-positivist views might be dispelled and described as merely conceptual. Therefore, the opposite points of view could be considered as metaphysically equivalent ways of grasping the same social reality. According to the crucial premise of the argument law is a meliorative thick concept. The essay was inspired by an analogy between the philosophy of law and the philosophy of science first discussed by Lon L. Fuller.

Is Theism Incompatible with the Pauline Principle?

This paper criticises James Sterba’s use of the Pauline principle to formulate a logical version of the problem of evil. Sterba’s argument contains a crucial premise: If human agents are always prohibited from doing some action, God is also prohibited from doing that action. This implies that the Pauline principle applies to both Divine and human agents. I argue that any Theist who affirms a divine command theory of ethics can consistently and coherently deny this premise and its implication. If a divine command theory is coherent, a theist can affirm that the Pauline principle governs human agents’ actions but not God’s actions. I will also criticise Sterba’s criticisms of a divine command theory and argue that they fail.

Security of Decoy-State Quantum Key Distribution with Correlated Intensity Fluctuations

One of the most prominent techniques to enhance the performance of practical quantum key distribution (QKD) systems with laser sources is the decoy-state method. Current decoy-state QKD setups operate at gigahertz repetition rates, a regime where memory effects in the modulators and electronics that control them create correlations between the intensities of the emitted pulses. This translates into information leakage about the selected intensities, which cripples a crucial premise of the decoy-state method, thus invalidating the use of standard security analyzes. To overcome this problem, a security proof that exploits the Cauchy-Schwarz constraint has been introduced recently. Its main drawback is, however, that the achievable key rate is significantly lower than that of the ideal scenario without intensity correlations. Here, we improve this security proof technique by combining it with a fine-grained decoy-state analysis, which can deliver a tight estimation of the relevant parameters that determine the secret key rate. This results in a notable performance enhancement, being now the attainable distance double that of previous analyzes for certain parameter regimes. Also, we show that when the probability density function of the intensity fluctuations, conditioned on the current and previous intensity choices, is known, our approach provides a key rate very similar to the ideal scenario, which highlights the importance of an accurate experimental characterization of the correlations.

Monitoring multiple geometrical dimensions in WAAM based on a multi-channel monocular visual sensor

Monitoring multiple geometrical dimensions is a crucial premise to realize precise control of layer size in wire and arc additive manufacturing (WAAM). Different from conventional single-target detection using a single sensor or multiple-target detection using multiple sensors, this study designs a novel multi-channel monocular vision sensor to monitor different geometrical sizes, i.e., current layer to nozzle distance, previous layer to nozzle distance, and layer width. A Marr-Hildreth algorithm is employed to extract boundaries of the molten pool and the previous layer. A homography matrix is solved for height calibration, and detected heights are introduced to assist layer width calibration. The sensor’s accuracy is verified via variable-size templates, and the maximum errors of detected height and width are 3.39% and 3.98%, respectively. Finally, the sensor is applied to monitor the layer size of a 5th-layered wall. This study lays a solid foundation for high-precision control of multiple geometrical sizes in WAAM.

Is There a Right to Hope That God Exists? Evil and the Principle of Non-Parity

In this paper, I respond to James Sterba’s recent book ‘Is a Good God Logically Possible?’ I show that Sterba concludes that God is not logically possible by ignoring three important issues: (a) the different functions of leeway indeterminism (and the political freedom presupposed by it) and autonomy (the two are very different things, even though both go under the name of freedom), (b) the differences in the conditions of agency in God and in creatures, (there is non-parity in how each must apply the single moral law), and (c) the non-parity between our knowledge and God’s. I provide a brief summary of Sterba’s arguments, and I develop the following points: 1. Sterba’s argument against a Free-Will Defense hinges on his conflation of political freedom and autonomy; 2. Sterba’s crucial premise for his argument against soul-making theodicies (namely, that the “Pauline Principle” should be applied univocally across God and creatures) is false; 3. Sterba’s arguments against skeptical theism depend on his assumption that our knowledge is comparable to that of God. In each case, Sterba either does not recognize non-parity between God and creatures or does not recognize the difference between the profane (e.g., political matters) and the sacred, (e.g., spiritual matters having to do with the inner nature of the soul’s development).

A localist turn for defending moral explanations

One influential positive argument for moral realism is the Explanatory Indispensability Argument. A crucial premise of this argument is the explanatory relevance of moral properties. On this premise, moral properties, such as wrongness, rightness, courage, and cowardice, are explanatorily indispensable to some empirical phenomena. Although there has been a lively debate on this premise, one crucial challenge to this thesis, what I call the Scientific Standard Challenge, has not been properly discussed. After explaining this challenge and a related concern, I argue that in response to this central challenge, the proponents of the argument should take what I call the localist turn to defend the explanatory indispensability of moral properties. The localist turn encourages the defenders of moral explanations to be more sensitive to the nature of each moral explanation. For instance, some moral explanations are explanations of social matters, so the standards they need to meet are provided by relevant branches of the social sciences. On the other hand, some other moral explanations are about our psychology, so the theoretical standards those explanations need to meet should come from psychology. I illustrate how this localist project can be conducted in the case of the moral explanation that appeals to injustice. I argue that the field of comparative politics provides the theoretical standards moral explanations of institutional change need to meet. I shall then illustrate how a sophisticated moral explanation can meet those theoretical standards and how this moral explanation can be strong evidence of injustice’s explanatory indispensability.

The Problem of Hell: A Thomistic Critique of David Bentley Hart’s NeceSsitarian Universalism

AbstractDavid Bentley Hart has recently argued that universal salvation is a metaphysically necessary outcome of God’s act of creating rational beings. A crucial premise of Hart’s argument is a compatibilist view of free will, according to which God can determine human choices without taking away their freedom. This view constitutes common ground between Hart and the tradition of classical Thomism, which emphasizes the non‐competitive relation between human freedom and God’s universal causality. Unfortunately, Thomistic compatibilism undermines the so‐called Free Will Defense, which is often considered to be the only viable way of responding to contemporary criticism of the doctrine of hell. Can the existence of hell be reconciled with God’s goodness given a Thomistic conception of rational freedom? This question is of interest not only to followers of Aquinas but to anyone who rejects a ‘zero‐sum competition’ between freedom and grace, and who also believes that divine revelation confirms the possibility of perdition. The present article proposes an alternative to the Free Will Defense—called The Thomistic Autonomy Defense—which aims to block Hart’s arguments for the necessity of universal salvation.

Patarenes, Protestants and Islam in Bosnia: Deconstructing the Bogomil Theory

ABSTRACT Attempts to explain the existence of a large indigenous Muslim population in Bosnia have resulted in two main academic trends, both subject to politicized and biased representations of the area’s history. The first, originating mostly in Serbian nationalist historiography, claims that Bosnian Christians were forcibly converted and has been used since the nineteenth century to galvanize support for Serbian expansionist ambitions in the shape of its ‘Greater Serbia’ project. The second and long the most popular view holds that the majority of Bosnian Christians who converted to Islam belonged to a heretical ‘Bogomil’ institution of the Bosnian Church. Although this theory has been questioned over time, one of its central premises – that there are similarities between the theology and practice of Bogomilism and those of Islam – has never undergone any scrutiny. This article examines both this crucial premise of the Bogomil Theory, and the theory’s provenance, and argues that, just as we should dismiss the Serbian (and Croatian) nationalist theories on the subject, we should also recognize the Bogomil Theory as a mythicized account of history, motived by both the personal prejudice and imperialist-colonialist agendas of its nineteenth-century authors.

God-Guided Contract and Scriptural Sovereignty

The study intends to examine the two related concepts of contract and sovereignty which (practically unknown in Muscovite Russia) are commonly referred to as proofs of dominance of western concepts in PVM. By examining these concepts in the text I try to point out the Muscovite legacy of the argumentation. I claim that the contract of government between the people and the ruler contains the Muscovite idea of God acting through the people ("the will of the people is the will of God" — the crucial premise legitimating succession both in 1598 and 1613 in official documents) while the concept of sovereignty is predominantly justified by traditional references to the Bible and not so much by arguments taken from western political theory.