In this article I defend a new argument against moralist theories of legitimacy and in favour of realist theories. Moralist theories, I argue, are vulnerable to ideological and wishful thinking because they do not connect the demands of legitimacy with the interests of rulers. Realist theories, however, generally do manage to make this connection. This is because satisfying the usual realist criteria for legitimacy – the creation of a stable political order that transcends brute coercion – is usually necessary for (...) rulers to preserve their rule. (shrink)

The proposed work describes an approach for the segmentation of abnormal lung CT scans of COVID-19. Lung diseases are the leading killer in both men and women. The pulmonary experts normally make attempts, such as early detection of patients by tomography tests before lung specialists treat patients who are tortured by lung disease. Moreover, lung specialists do their best to detect the presence of lung conditions. X rays or CT scan checks are performed for tomography tests. The finest approach for (...) medical diagnosis and a wide range of uses is computed tomography. This kind of imaging offers elaborate cross-sectional pictures of skinny slices of the organic structure. However, the preprocessing and denoising methods of Lung CT scans may mask some important image features. To address this challenge, we propose a novel framework involving an optimization technique algorithm to solve a multilevel thresholding problem based on information theory to segment abnormal lung CT scans. The proposed framework will evaluate a sample of CT scan images taken from a well-known benchmark database. The evaluation results will assess subjectively and objectively to demonstrate the effectiveness of the proposed framework. (shrink)

In this article I defend a new argument against moralist theories of legitimacy and in favour of realist theories. Moralist theories, I argue, are vulnerable to ideological and wishful thinking because they do not connect the demands of legitimacy with the interests of rulers. Realist theories, however, generally do manage to make this connection. This is because satisfying the usual realist criteria for legitimacy – the creation of a stable political order that transcends brute coercion – is usually necessary for (...) rulers to preserve their rule. (shrink)

Journal of Social Philosophy, EarlyView.

Objectives—This study examined the issue of confidentiality in relation to i) undergraduate curriculum content in physiotherapy, and ii) the awareness, experiences and attitudes of clinical physiotherapists.Design—Postal survey of universities and focus group interviews with physiotherapists.Setting—Twenty-five universities in the UK and Ireland and 44 therapists in five hospitals in southern England.Results—The survey of universities indicated that legal and ethical aspects of confidentiality featured in virtually all preregistration courses that responded. However, whereas its inclusion was rated as extremely important, the degree of (...) coverage of confidentiality varied considerably between courses. Within the focus groups, 35 informants recollected coverage of confidentiality in their preregistration education, and 12 in postregistration in-service training; in neither case was this coverage in great detail. Informants identified environmental factors and working practices as barriers to preserving confidentiality. Disclosure to others also gave rise to difficulties. Informants were only aware in general terms of the relevant sections of the Chartered Society of Physiotherapy's Rules of Professional Conduct.Conclusions—Aspects of hospital-based physiotherapy practice were seen to create specific problems in relation to confidentiality. More detailed sources of education and guidance on this issue appear to be required. (shrink)

This fourth edition of Precedent in English Law presents a basic guide to the current doctrine of precedent in England, set in the wider context of the jurisprudential problems which any treatment of this topic involves. Such problems include the nature of _ratio_ _decidendi_ of a precedentand of its binding force, the significance of precedents alongside other sources of law, their role in legal reasoning, and the account which must be taken of them by any general theory of law. Considerable (...) re-writing has been undertaken to update case-law and take account of the possibleimplications for the doctrine of precedent of the impact of European Community law, making it an indispensable work of reference for readers interested in the past history, present state, and future developments of English rules of precedent. (shrink)

Most theorists of public reason, including both its proponents and critics, now accept that it is inconclusive, meaning that its correct application can result in a plurality of reasonable solutions to the issues it addresses. While some early critics argued that the inconclusiveness of public reason presented a serious problem for political legitimacy – a charge often associated with ‘the completeness objection’ – defenders of public reason have generally dismissed this objection on the grounds that political legitimacy does not hinge (...) on the selection of a singularly reasonable or most reasonable resolution to political disputes. We argue, however, that once the notion of political legitimacy accepted by prominent public reason theorists has been successfully disambiguated, the inconclusiveness of public reason is far more problematic than public reason theorists have acknowledged. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reply to Jiwei CiBen Cross (bio)I am very grateful to Jiwei Ci for his thoughtful and considerate response to my article. I think my understanding of Weber, legitimacy, political realism, and Ci's own work has benefited greatly as a result.I. What's the Problem with Performance Legitimacy?Ci and I both accept that legitimacy is best understood in terms of Weber's "descriptively de jure legitimacy." Put simply, we both think (...) that a state is legitimate if and only if a large enough number of its constituents think it is legitimate. According to this view, therefore, a source of legitimacy is any type of belief—or narrative, as many political realists tend to prefer—that constituents take to give them sufficient reason for regarding the state as legitimate.On the surface, understanding legitimacy in this way seems open to the possibility of a very wide variety of sources of legitimacy. All that matters is whether the source of legitimacy can persuade people to regard the state as legitimate. Weber's study of legitimacy focuses on three particular sources: [End Page 165] legal, traditional, and charismatic. However, as Ci (2024, pp. 149–150) rightly points out, Weber can allow for other sources of legitimacy as well, provided that they have the requisite persuasive power.1The question that Ci and I are interested in here is whether the state's good performance can be a viable source of legitimacy. In my view, it might be possible for a government to secure its legitimacy in this fashion if two conditions are met:(1). the state can reliably maintain good performance—or at least can reliably convince its constituents that it maintains good performance.(2). the state has a sufficiently large constituency of people who possess a shared interest that is served by good performance.I previously expressed doubts about whether the second condition can be reliably met (Cross 2024, pp. 139–143). Hence, I am somewhat skeptical about the possibility of performance legitimacy, but this skepticism does not stem from a categorical distinction between performance and legitimacy. Nor does this skepticism stem from doubts about the ability of any state to maintain good performance. Rather, it stems from doubts about whether the existence of a shared interest is a reliable basis for identifying the constituency of legitimacy.Ci, on the other hand, does think that good performance and legitimacy are categorically distinct, albeit interrelated. He holds that good performance can enhance an existing source of legitimacy. He also holds that it can offer some compensation for the absence of an existing source of legitimacy. However, he denies that good performance can ever count as a source of legitimacy in its own right. Furthermore, Ci's arguments for this claim, as I understand them, are not reducible to the further claim that it is unlikely that any state can reliably sustain the kind of unwaveringly good performance that reliably serves the shared interests of its constituency. That is, although he appears highly skeptical of the state's capacity to satisfy (1) and (2), this skepticism is not, strictly speaking, essential to his arguments.Our main disagreement, then, concerns the correct basis for skepticism about performance legitimacy. Although I think it would be fair to say that Ci's skepticism is stronger and more general than my own, this appears to stem from our different reasons for this skepticism. In what follows, I will try to briefly summarize Ci's objections to performance legitimacy and the extent of my disagreements with them.II. The Genealogical ArgumentI previously suggested that Ci's distinction between performance-enhancing legitimacy and performance that ameliorates a lack of legitimacy may be a distinction without a difference (Cross 2024, pp. 132–135). What reason do rulers have to prefer the former to the latter? [End Page 166]Ci's response helpfully clarifies what he takes to be at stake in this distinction. Legitimacy, he argues, is meant to provide a justification specifically for the state's monopoly of violence. As Ci rightly notes, I did not address the significance of this point. I did not distinguish between a justification for the state's monopoly of... (shrink)

Despite the results of David Lewis, Peter Gärdenfors, and others, showing that imaging and classical conditionalization coincide only in the most trivial probabilistic models of belief revision, it turns out that imaging on a proposition A can always be described via Popper function conditionalization on a proposition that entails A. This result generalizes to any method of belief revision meeting certain minimal requirements. The proof is illustrated by an application of imaging in the context of the Monty Hall Problem.

In lieu of an abstract, here is a brief excerpt of the content:Four-Dimensionalism and Identity Across Time: Henry of Ghent vs. BonaventureRichard CrossModern accounts of the identity of an object across time tend to fall roughly into two basic types.Let us say that something persists ıff, somehow or other, it exists at various times; this is the neutral word. Something perdures iff it persists by having different temporal parts, or stages, at different times, though no one part of it is (...) wholly present at more than one time; whereas it endures iff it persists by being wholly present at more than one time.1On the first of these analyses, but not the second, a persistent object includes temporal parts, and persistent material substances are thus on this analysis four-dimensional objects. On the first analysis, but not on the second, time-indices are explicable in terms of temporal parts. I shall take this as the basic difference between the two views.2Both views allow us to talk of temporal order and temporal direction. I [End Page 393] shall follow the medievals and talk about succession to capture both of these claims: “The notion of succession formally consists in the notion of ‘before’ and ‘after,’”3 and I take it that talk of “before” and “after” entails both order and direction.4 Medieval accounts of identity across time are, however, in some ways more obscure than the two modern ones just described. The medievals tend to associate all temporal succession with temporal extension: an object x has temporal succession if and only if x is temporally extended (and thus includes temporal parts).5 The medievals also (correctly, I believe) tend to suppose that substances—unlike (say) processes—do not have temporal parts.6 Thus, by the end of the thirteenth century the schoolmen commonly [End Page 394] distinguish permanent objects from successive objects. Permanent objects do not, and successive objects do, have temporal parts.7 Successive objects are processes; the class of permanent objects was generally held to include not only God, but also angels, material substances, and static accidents (i.e., accidents which do not entail any sort of process).8Given these claims, there is a problem to be faced in giving an account of the identity of, say, a material substance across time. But it is not the problem we would face. Our problem, post-Hume, is to explain the relevant (explanatory) continuity requirements for identity across time. The medievals’ problem is rather different. They do not need to specify general continuity requirements, because for them there is a very real sense in which substances—and indeed all permanent objects—lack temporal extension and, therefore, any sort of temporal succession at all. The problem for the medievals is thus to explain how substances can persist at all, rather than exist merely fleetingly.9In what follows, I will examine two thirteenth-century solutions to this problem. The first is a radical one: simply to deny the standard claim that substances lack temporal parts. This view will thus bear some resemblance to what we would label four-dimensionalism. The second solution I will examine represents one of the more successful attempts to defend the standard thirteenth-century line that substances lack temporal parts. This solution goes some way towards allowing succession (and time-indexing) without appealing to temporal parts.To understand the debate, we need to keep in mind that the medievals—following Aristotle—talk of the temporality of an object in terms of its being [End Page 395] measured by time. Confusingly, they might speak of a substance’s being measured in one sort of way, and its accidental properties’ being measured in another. Thus, by the end of the thirteenth century it was often claimed that the duration of a substance is measured not by time but by the aevum—the durational measure of objects lacking temporal parts—while some of a substance’s accidental properties could be measured by time. (I will explain in detail below how time and the aevum were understood.) On this view, the temporality of an object’s properties is not sufficient cause for positing the temporality of the object. There are acceptable and unacceptable ways of understanding... (shrink)

According to Scotus, an intelligible species with universal content, inherent in the mind, is a partial cause of an occurrent cognition whose immediate object is the self-same species. I attempt to explain how Scotus defends the possibility of this causal activity. Scotus claims, generally, that forms are causes, and that inherence makes no difference to the capacity of a form to cause an effect. He illustrates this by examining a case in which an accident is an instrument of a substance (...) in the production of a certain sort of effect. All that is required is that the accident is relevantly joined to the substance, whether or not it inheres in the substance. Since intelligible species are bearers of semantic content, it follows that non-inherent objects of thought can also be the bearers of such content. Such objects are included in the mind without inherence, and the boundary between the mind and external reality is to this extent broken down. (shrink)

Digital systems are reshaping how we engage with music as a sounding dimension of cultural life that is capable of being transformed into a commodity. At the same time, as we increasingly engage through digital media with each other and with virtual others, attributes of music that underpin our capacity to interact communicatively are disregarded or overlooked within those media. Even before the advent of technologies of music reproduction, music was susceptible to assimilation into economic acts of exchange. What is (...) new in the digital world is the way in which modes of engagement with music are themselves being absorbed into an economy built on the datafication of virtual acts and the digital shadows of casual preferences. But music is more than just sounds that are culturally sanctioned as musical. Music is manifested as behaviours, and in interactive behaviour. Music is participatory as well as presentational, and in the participatory mode—involving collective, non-specialist, interactive real-time music-making—has significant individual and social consequences. Yet music as real-time participation is largely absent from the virtual world, with potential social costs that remain to be understood. Moreover, our everyday, face-to-face communicative—conversational—interactions are imbued with patterns between interlocutors that are musical, in that they share features with what we are happy to describe as “music”. These features are presently lacking in digital systems designed to subserve communicative functions, and this paper will consider the significant implications for our interactions with machines to which their successful incorporation into voice–user interfaces would give rise. (shrink)

This essay is, primarily, a discussion of four results about the principle of maximizing entropy (MAXENT) and its connections with Bayesian theory. Result 1 provides a restricted equivalence between the two: where the Bayesian model for MAXENT inference uses an "a priori" probability that is uniform, and where all MAXENT constraints are limited to 0-1 expectations for simple indicator-variables. The other three results report on an inability to extend the equivalence beyond these specialized constraints. Result 2 established a sensitivity (...) of MAXENT inference to the choice of the algebra of possibilities even though all empirical constraints imposed on the MAXENT solution are satisfied in each measure space considered. The resulting MAXENT distribution is not invariant over the choice of measure space. Thus, old and familiar problems with the Laplacian principle of Insufficient Reason also plague MAXENT theory. Result 3 builds upon the findings of Friedman and Shimony (1971; 1973) and demonstrates the absence of an exchangeable, Bayesian model for predictive MAXENT distributions when the MAXENT constraints are interpreted according to Jaynes's (1978) prescription for his (1963) Brandeis Dice problem. Lastly, Result 4 generalizes the Friedman and Shimony objection to cross-entropy (Kullback-information) shifts subject to a constraint of a new odds-ratio for two disjoint events. (shrink)

Nonmonotonic consequence is the subject of a vast literature, but the idea of a nonmonotonic counterpart of logical inconsistency—the idea of a defeasible property representing internal conflict of an inductive or evidential nature—has been entirely neglected. After considering and dismissing two possible analyses relating nonmonotonic consequence and a nonmonotonic counterpart of logical inconsistency, this paper offers a set of postulates for nonmonotonic inconsistency, an analysis of nonmonotonic inconsistency in terms of nonmonotonic consequence, and a series of results showing that nonmonotonic (...) inconsistency conforms to these postulates given the analysis of nonmonotonic inconsistency presented here and certain postulates for nonmonotonic consequence. The results presented here establish the interest of certain previously undiscussed postulates of nonmonotonic consequence. These results also show that nonmonotonicity, which has never seemed useful in the formulation of general principles governing nonmonotonic reasoning, is relevant to the positive characterization of nonmonotonic inference after all. (shrink)

The general scholarship on armed conflict in Manipur, India, ignores the experiences of women as agents. Feminist scholarship counters this tendency, revealing women's everyday responses to the violence that constrains them. However, this scholarship often fails to be intersectional, and it lauds every instance of women's agency without evaluating it in terms of its ability to build peace. Employing Kimberlé Crenshaw's underused distinction between structural and political intersectionality and Saba Mahmood's concept of agency, I analyze my field research conducted with (...) women's peacebuilding groups in Manipur in 2014 and 2015. Using structural intersectionality, I first describe the qualitatively different experiences of women peacebuilders living at different social locations. Using political intersectionality as a normative tool, I then show that ethnic and religious hierarchies often disrupt women's attempts to build peace. Interethnic peacebuilding groups that rely on gender-based solidarity tend to privilege the experiences of the women coming from the majority ethnic group. Other peacebuilding groups, bound by ethnicity, often distrust and resent women who come from different ethnic enclaves. I argue that women's peacebuilding agency must aim at an inclusive justpeace if it is to succeed. We should evaluate agency, rather than glorifying all instances of women's responses to violence. (shrink)

I give a probabilistic semantics for modal logic in which modal operators function as quantifiers over Popper functions in probabilistic model sets, thereby generalizing Kripke's semantics for modal logic.

John of Ripa’s (fl. 1350s) Christology is highly unusual in the context of late medieval theology, since it is a form of the old “homo assumptus (assumed man)” Christology found in St. Augustine and the Victorines, but not generally in later theologians. Ripa explains the Incarnation by supposing that the divine essence is in some sense the form of the human nature, such that both “God” and the whole panoply of divine properties can be predicated of it. This move allows (...) Ripa to secure the truth of claims mandated by the authoritative Council of Chalcedon, such as “this human being is eternal.” Ripa appeals to a kind of relative identity to argue that the human being is (non-classically) identical with the divine person, such that positing something that “is God, but not the deity” does not result in an additional God or additional divine person. (shrink)

Hysteresis means literally “that which comes later,” being derived from the Greek verb ύστερέω. Thus, hysteresis effects, generally defined, are those that persist after the initial causes giving rise to the effects are removed. During the course of the 1980s, it became increasingly fashionable to invoke hysteresis effects to explain economic phenomena. Two of the main areas of application were to unemployment and international trade. In the case of unemployment, distinctive features of labor markets, such as social norms that rule (...) out wage-cutting in the face of rising unemployment, imply that “increases in unemployment have a direct impact on the ‘natural’ rate of unemployment”. The implication for macroeconomic systems is that “temporary shocks can have a permanent effect on the level of employment”. In the case of international trade, hysteresis effects arise from the industrial economics of sunk costs: “the argument is that firms must incur sunk costs to enter new markets, and cannot recoup these costs if they exit.… thus foreign firms that entered the U.S. market when the dollar was high do not abandon their sunk cost investments when the dollar falls.” The implication for trade flows is “an effect which persists after the cause that brought it about has been removed”. (shrink)

I investigate the consequences of interpreting Lehrer's account of system-relative justification as a theory of inductive inference. I discuss which assumptions about coherence would be sufficient to make the account of inductive inference derived from Lehrer's theory conform to a series of widely discussed general principles, including those constitutive of cumulative reasoning. I then discuss the epistemological significance of the resulting theory of inductive inference.

Wood, Kressel, Joshi, and Louie thoroughly evaluate the evidence for menstrual cycle shifts in ratings of several male characteristics and conclude that their analyses fail to provide supportive evidence for consistent cycle effects. The topic of menstrual cycle shifts in mate preferences has been strongly debated, with disagreements over both scientific content and practice. Here, we attempt to take a step back from these acrimonious exchanges and focus instead on how to interpret menstrual cycle shifts in mate preference tasks, independently (...) from the question of when, or if, task performance varies with cycle stage. A greater consideration of domain-general mechanisms could provide an opportunity for investigating how evolved predispositions interact with socially transmitted information in biasing women’s responses on mate preference tasks. (shrink)

Musical Group Interaction (MGI) has been found to promote prosocial tendencies, including empathy, across various populations. However, experimental study is lacking in respect of effects of everyday forms of musical engagement on prosocial tendencies, as well as whether key aspects—such as physical co-presence of MGI participants—are necessary to enhance prosocial tendencies. We developed an experimental procedure in order to study online engagement with collaborative playlists and to investigate socio-cognitive components of prosocial tendencies expected to increase as a consequence of engagement. (...) We aimed to determine whether mereperceivedpresence of a partner during playlist-making could elicit observable correlates of social processing implicated in both MGI and prosocial behaviors more generally and identify the potential roles of demographic, musical, and inter-individual differences. Preliminary results suggest that for younger individuals, some of the social processes involved in joint music-making and implicated in empathic processes are likely to be elicited even by an assumption of virtual co-presence. In addition, individual differences in styles of listening behavior may mediate the effects of mere perceived partner presence on recognition memory. (shrink)

RationaleThere are growing concerns over the occurrence of adverse physiologic events occurring in pilots during operation of United States Air Force and Navy high-performance aircraft. We hypothesize that a heightened inspiratory work of breathing experienced by jet pilots by virtue of the on-board life support system may constitute a “distraction stimulus” consequent to an increased sensation of respiratory muscle effort. As such, the purpose of this study was to determine whether increasing inspiratory muscle effort adversely impacts on attentional performance.MethodsTwelve, healthy (...) participants were recruited for this study. Participants completed six repetitions of a modified Masked Conjunctive Continuous Performance Task protocol while breathing against four different inspiratory threshold loads to assess median reaction times. A computer-controlled threshold loading device was used to set the inspiratory threshold loads. Repeated measures analysis of variances were performed to examine: the efficacy of the threshold loading device to impose significantly higher loading at each loading condition; the effects of loading condition on respiratory muscle effort sensation; and the influence of hypercapnia on MCCPT scores during inspiratory threshold loading. Generalized additive mixed effects models were used to examine the potential non-linear effects of respiratory muscular effort sensation, device loading, and hypercapnia, on MCCPT scores during inspiratory threshold loading.ResultsInspiratory threshold loading significantly augmented inspiratory effort sensation and the inspiratory pressure-time product. Our analyses also revealed that median hit RT was positively associated with inspiratory effort sensation during inspiratory loading trials.ConclusionThe findings of this work suggest that it was not increasing inspiratory muscle effort per se, but rather participant’s subjective perception of inspiratory “load” that impacts negatively on attentional performance; i.e., as the degree of inspiratory effort sensation increased, sotoo did median hit RT. As such, it is reasonable to suggest that minimizing inspiratory effort sensation during high-performance flight operations may prove useful in reducing pilot RTs during complex behavioral tasks. (shrink)

ObjectiveTo apply a socioecological approach to identify risk and protective factors across levels of the “sports-ecosystem,” which are associated with mental health outcomes among athletes in para-sports and non-para sports. A further aim is to determine whether para athletes have unique risks and protective factor profiles compared to non-para athletes.MethodsA cross-sectional, anonymous online-survey was provided to all categorized athletes aged 16 years and older, registered with the Australian Institute of Sport. Mental health outcomes included mental health symptoms, general psychological (...) distress, risky alcohol consumption and eating disorder risk. Risk and protective factors across multiple levels of the socioecological model, including individual, microsystem, exosystem and macrosystem level factors were assessed via self-report.ResultsA total of 427 elite athletes participated in the study. No significant differences in the rates of mental health problems were observed between para and non-para athletes. Both differences and similarities in risk and protective factor profiles were found across the multiple levels of the sports-ecosystem. Weak evidence was also found to support the hypothesis that certain risk factors, including experiencing two or more adverse life events in the past year, sports related concussion, high self-stigma, inadequate social support and low psychological safety conferred a greater risk for poorer mental health outcomes for para athletes in particular.ConclusionRisk factors occurring across various levels of the sports ecosystem, including individual, interpersonal and organizational level risk factors were found to be associated with a range of poorer mental health outcomes. The association between mental ill-health and certain risk factors, particularly those at the individual and microsystem level, appear to be greater for para athletes. These findings have important implications for policy and mental health service provision in elite sports settings, highlighting the need for more nuanced approaches to subpopulations, and the delivery of mental health interventions across all levels of the sports ecosystem. (shrink)

Cook et al. overstate the evidence supporting their associative account of mirror neurons in humans: most studies do not address a key property, action-specificity that generalizes across the visual and motor domains. Multivariate pattern analysis of neuroimaging data can address this concern, and we illustrate how MVPA can be used to test key predictions of their account.

We focus on a class of multicriteria methods that are commonly used in environmental decision making--those that employ the weighted linear average algorithm (and this includes the popular analytic hierarchy process (AHP)). While we do not doubt the potential benefits of using formal decision methods of this type, we draw attention to the consequences of not using them well. In particular, we highlight a property of these methods that should not be overlooked when they are applied in environmental and wider (...) decision-making contexts: the final decision or ranking of options is dependent on the choice of performance scoring scales for the criteria when the criteria weights are held constant. We compare this "sensitivity" to a well-known criticism of the AHP, and we go on to describe the more general lesson when it comes to using weighted linear average methods--a lesson concerning the relationship between criteria weights and performance scoring scales. (shrink)

Some factors affecting marital distances have been studied in two Outer Hebridean islands, Harris (843 marriages) and Barra (444 marriages), over the period 1855-1990. In each island marital distances fell before 1900, but then rose to their greatest values after the 1950s. Fishermen generally married at the shortest distances and men in land-based occupations at the longest. The depression in the fishing industry during the 1880s and early 1890s was associated with reductions in marital distances, especially among fishermen. In the (...) different regions of Harris, marital distances were least in the south-east, where settlement was most dense, and greatest in the south-west where it was most sparse. (shrink)

The generalized second law of thermodynamics states that entropy always increases when all event horizons are attributed with an entropy proportional to their area. We test the generalized second law by investigating the change in entropy when dust, radiation and black holes cross a cosmological event horizon. We generalize for flat, open and closed Friedmann–Robertson–Walker universes by using numerical calculations to determine the cosmological horizon evolution. In most cases, the loss of entropy from (...) within the cosmological horizon is more than balanced by an increase in cosmological event horizon entropy, maintaining the validity of the generalized second law of thermodynamics. However, an intriguing set of open universe models shows an apparent entropy decrease when black holes disappear over the cosmological event horizon. We anticipate that this apparent violation of the generalized second law will disappear when solutions are available for black holes embedded in arbitrary backgrounds. (shrink)

A case study is presented of the development of computer-based support tools for power engineers in the electricity supply industry. The objective was to develop an expert system to support witching schedule production. A user-centred approach was followed which led the user community to conclude that a switching schedule production assistant (SSPA) was required which would leave control with the power engineer. Prototype systems were developed and evaluated in user trials which revealed that a significant and more general purpose tool (...) would be a computer generated electricity network display that the engineers could manipulate. The paper concludes that the process of enabling users to evaluate alternative forms of technology can facilitate the development systems that are useful, acceptable and usable. (shrink)

Cross entropy measure is one of the best way to calculate the divergence of any variable from the priori one variable. We define a new cross entropy measure under interval neutrosophic set environment.

A continuous family of static spherically symmetric solutions of Einstein’s vacuum field equations with a spatial singularity at the origin \ is found. These solutions are parametrized by a real valued parameter \ and such that the radial horizon’s location is displaced continuously towards the singularity ) as \ increases. In the extreme limit \, the location of the singularity and horizon merges leading to a null singularity. In this extreme case, any infalling observer hits the null singularity at the (...) very moment he/she crosses the horizon. This fact may have important consequences for the resolution of the fire wall problem and the complementarity controversy in black holes. An heuristic argument is provided how one might avoid the Hawking particle emission process in this extreme case when the singularity and horizon merges. The field equations due to a delta-function point-mass source at \ are solved and the Euclidean gravitational action corresponding to those solutions is evaluated explicitly. It is found that the Euclidean action is precisely equal to the black hole entropy. This result holds in any dimensions \. (shrink)

Though we have access to a wealth of information, the main issue is always how to process the available information. How to make sense of all we observe and know. Just like the English alphabet: we know there are 26 letters but unless we put these letters together in a meaningful way, they convey no information. There are infinitely many ways of putting these letters together. Only a small number of those make sense. Only some of those convey exactly what (...) we wish to convey though the message may be interpreted differently by different individuals. That same issue comes up with information: how can we process the information we have? How can we infer and reason under conditions of incomplete observed information? In his seminal book on the philosophy of information, Floridi (2011a) raises a number of open questions. I discuss here one of these questions. That question is how to process information. To do so, I take the more realistic view that information is always limited, incomplete and possibly noisy. I define types of information, relate it to Floridi’s definitions and discuss a basic formulation for processing information under a unified framework. I relate it to some of the basic concepts discussed in the book. (shrink)

This article describes some potential uses of Bayesian estimation for time-series and panel data models by incorporating information from prior probabilities in addition to observed data. Drawing on econometrics and other literatures we illustrate the use of informative “shrinkage” or “small variance” priors while extending prior work on the general cross-lagged panel model. Using a panel dataset of national income and subjective well-being we describe three key benefits of these priors. First, they shrink parameter estimates toward zero or toward (...) each other for time-varying parameters, which lends additional support for an income → SWB effect that is not supported with maximum likelihood. This is useful because, second, these priors increase model parsimony and the stability of estimates and thus improve out-of-sample predictions and interpretability, which means estimated effect should also be more trustworthy than under ML. Third, these priors allow estimating otherwise under-identified models under ML, allowing higher-order lagged effects and time-varying parameters that are otherwise impossible to estimate using observed data alone. In conclusion we note some of the responsibilities that come with the use of priors which, departing from typical commentaries on their scientific applications, we describe as involving reflection on how best to apply modeling tools to address matters of worldly concern. (shrink)

In many domains of biology, explanation takes the form of characterizing the mechanism responsible for a particular phenomenon in a specific biological system. How are such explanations generalized? One important strategy assumes conservation of mechanisms through evolutionary descent. But conservation is seldom complete. In the case discussed, the central mechanism for circadian rhythms in animals was first identified in Drosophila and then extended to mammals. Scientists' working assumption that the clock mechanisms would be conserved both yielded important generalizations and (...) served as a heuristic for discovery, especially when significant differences between the insect and mammalian mechanism were identified. †To contact the author, please write to: Department of Philosophy and Interdisciplinary Programs in Science Studies and Cognitive Science, 0119, University of California, San Diego, La Jolla, CA 92093‐0119; e‐mail: [email protected]. (shrink)