In “Risk Based Passenger Screening in Aviation Security: Implications and Variants of a New Paradigm”, Sebastian Weydner-Volkmann describes the current paradigm shift from ‘traditional’ forms of screening to ‘risk based passenger screening’ (RBS) in aviation security. This paradigm shift is put in the context of the wider historical development of risk management approaches. Through a discussion of Michel Foucault, Herfried Münkler and Ulrich Beck, Weydner-Volkmann analyses the shortcomings of such approaches in public security policies, which become especially evident (...) in the aviation security context. As he shows, the turn towards methods of RBS can be seen as an attempt to address a trade-off ‘trilemma’ between the effective provision of security, the implied costs for industry and passengers, and the ethical, legal and societal implications of the screening procedures. In order to analyse foreseeable outcomes of embracing RBS, he differentiates three prototypical variants of the new paradigm on the basis of their main referent and rationale. For each variant, he then subsequently assesses the implications for the ‘trilemma’, after having unveiled the criteria of analysis that will necessarily have to be followed within a serious appraisal of RBS methods. (shrink)

The Passenger Name Record (PNR) Directive has introduced a pre-emptive, risk-based approach in the landscape of European databases and information exchange for security purposes. The article contributes to ongoing debates on algorithmic security and data-driven decision-making by fleshing out the specific way in which the EU PNR-based approach to security substantiates core characteristics of algorithmic regulation. The EU PNR framework appropriates data produced in the commercial sector for generating security-related behavioural predictions and does so in a way that gives (...) rise to a paradoxical normativity directly dependent on empirical states. Its ‘securitisation move’ is moreover characterised by an inherent tendence to expand. As a result, the PNR Directive poses challenges for existing check and balance mechanisms and for human autonomy. These challenges could be partially addressed by strengthening ex-post control procedures and independent auditing. Yet in the decision to adopt a risk-based security model, something more fundamental seems to be at stake, namely, the preservation of the idea of human beings as moral agents able to direct and modify their behaviour in accordance with an intelligible, reliable and predictable normative order. (shrink)

The suspension system is referred to as the set of springs, shock absorbers, and linkages that connect the car to the wheel system. The main purpose of the suspension system is to provide comfort for the passengers, which is created by reducing the effects of road bumpiness. It is worth noting that reducing the effects of such vibrations also diminishes the noise and undesirable sound as well as the effects of fatigue on mechanical parts of the vehicle. Due to the (...) importance of the abovementioned issues, the objective of this article is to reduce such vibrations on the car by implementing an active control method on the suspension system. For this purpose, a conventional first-order sliding mode controller has been designed for stochastic control of the quarter-car model. It is noteworthy that this controller has a significant ability to overcome the stochastic effects, uncertainty, and deal with nonlinear factors. To design a controller, the governing dynamical equation of the quarter-car system has been presented by considering the nonlinear terms in the springs and shock absorber, as well as taking into account the uncertainty factors in the system and the actuator. The design process of the sliding mode controller has been presented and its stability has been investigated in terms of the Lyapunov stability. In the current research, road surface variations are considered as Gaussian white noise. The dynamical system behavior for controlled and uncontrolled situations has been simulated and the extracted results have been presented. Besides, the effects of existing uncertainty in the suspension system and actuator have been evaluated and controller robustness has been checked. Also, the obtained quantitative and qualitative compressions have been presented. Moreover, the effect of controller parameters on the basin of attraction set and its extensiveness has been assessed. The achieved results have indicated the good performance and significant robustness of the designed controller to stabilize the suspension system and mitigate the effects of road bumpiness in the presence of uncertainty and noise factors. (shrink)

Public areas can have Internet of Things (IoT)-enabled sensing devices placed to keep track of possible security risks such as suspicious activity or misplaced possessions. In public areas, devices have the ability to gather information, but, in some cases, people must explicitly check out if they wish their data to be taken. This research presents an analysis of the IoT environment on Ganzhou’s public transportation, suggests a new IoT-based intelligent public transportation system framework, and shows how the communication network’s components (...) are being applied. In this study, we detail the deployment of IoT sensors through the collection of data. We proposed a novel Salp Swarm weighted recurrent neural network (SS- WRNN) for prediction in Ganzhou’s public transport flow. The data were extracted using linear discriminate analysis (LDA) from high-dimensional sensor data into a lower-dimensional space. For resolving the dynamic bus scheduling and controlling issues, decision support algorithms are suggested. It can help decision-makers decrease passenger trip times, boost scheduling effectiveness, and raise the rate at which transportation resources are utilized. (shrink)

The director of Courage International talks about the work of the apostolate in addressing homosexuality according to the mind and heart of the Church, which he calls “one of the most demanding aspects of education, formation, and pastoral care today.” But it is also an opportunity to attend to the often acute and persistent wounds of those who need healing within what Pope Francis calls the “field hospital” of the Church. The author points out that the work of Courage is (...) not first about homosexuality but about what it means to be human. It is an invitation to consider the question of the fulfillment of the human heart according to God’s gracious plan. National Catholic Bioethics Quarterly 15.2 : 221–230. (shrink)

Fichte offers separate analyses of the conditions for the possibility of representing or referring to (i) material objects and (ii) other minds – extra-subjective entities of importantly distinct sorts. These analyses are importantly akin, in that both postulate, as a necessary condition for the mental accomplishment under consideration, some sort of basic incapacity or limitation that is partly constitutive of human rationality. But the two accounts also involve interestingly different understandings of the nature and implications of the basic constraints in (...) question. As a first approximation, we can say that, for Fichte, (i) a rational being posits a putatively mind-independent object only if that being’s self-initiated mental activity encounters a pre- or proto-objective “check” or “affront” (Anstoß), and (ii) a rational being can first become concretely conscious of its own capacity for rational self-determination only as the addressee of a “summons” (Aufforderung) that calls upon it to actuate that very capacity. -/- In this essay I roughly reconstruct the indicated arguments. In the process, I endeavor to show that Fichte does not suppose that either argument firmly backs philosophical assent to the existence of material objects or of other minds. On the contrary: the goal of his professed ‘deductions’ of our everyday ‘convictions’ concerning such things is not to philosophically legitimate those prephilosophical beliefs. Instead, the aim of these arguments is to vindicate Fichte’s transcendental idealism – which, if anything, epistemically undermines said beliefs – by demonstrating that any experience that is putatively ‘of’ such things has, as its necessary and sufficient conditions, nothing but states and activities of the I. Thus, in the case of material objects, a radical difference manifest within the I – self-initiated rational activity versus “simple sensation” – is ‘set forth’ (vorgestellt) in a representation (Vorstellung) of an extra-subjective bearer of sensed qualities. And – much more controversially – in the case of other minds, a demand that the I (qua pure reason, constitutively committed to its own unlimited self-activity and efficacy) makes upon itself (qua rational individual capable of intelligent self-determination) is outwardly depicted as an appeal originating from an extra-subjective source. (shrink)

We describe how we used the interactive theorem prover Isabelle to formalise and check the laws of the Timed Interval Calculus (TIC). We also describe some important corrections to, clarifications of, and flaws in these laws, found as a result of our work.

Body checking, characterized by the repeated visual or physical inspection of particular parts of one’s own body (e.g. thighs, waist, or upper arms) is one of the most prominent behaviors associated with eating disorders, particularly Anorexia Nervosa (AN). In this paper, we explore the explanatory potential of the Recalcitrant Fear Model of AN (RFM) in relation to body checking. We argue that RFM, when combined with certain plausible auxiliary hypotheses about the cognitive and epistemic roles of emotions, is able to (...) explain key characteristics of body checking, including how body checking behavior becomes habitual and compulsive. (shrink)

Customized bus services are conducive to improving urban traffic and environment, and have attracted widespread attention. However, the problems encountered in the new customized bus mode include the large difference between the basis of customized bus passenger flow data analysis and the basis of the traditional bus passenger flow data analysis, and the difficulty in different vehicle scheduling caused by the combination of traditional and customized bus modes. We propose a customized bus passenger flow analysis algorithm and (...) multi-destination customized bus line capacity scheduling algorithm, and display them in an intuitive way. The experimental results show that the algorithm model established in this paper can basically meet the data requirements of operation and management, and can provide decision support for customized bus line planning. (shrink)

This paper concerns model-checking of fragments and extensions of CTL* on infinite-state Presburger counter systems, where the states are vectors of integers and the transitions are determined by means of relations definable within Presburger arithmetic. In general, reachability properties of counter systems are undecidable, but we have identified a natural class of admissible counter systems (ACS) for which we show that the quantification over paths in CTL* can be simulated by quantification over tuples of natural numbers, eventually allowing translation of (...) the whole Presburger-CTL* into Presburger arithmetic, thereby enabling effective model checking. We provide evidence that our results are close to optimal with respect to the class of counter systems described above. (shrink)

Optimal strategy, one of the main transit assignment models, can better demonstrate the flexibility for passengers using routes in a transit network. According to the basic optimal strategy model, passengers can board trains based on their frequency without any capacity limitation. In the metropolitan cities such as Beijing, Shanghai, and Hong Kong, morning commuters face huge transit problems. Especially for the metro system, there is heavy rush in metro stations. Owing to the limited train capacity, some passengers cannot board the (...) first coming train and need to wait for the next one. To better demonstrate the behavior of passengers pertaining to the limited train capacity, we consider capacity constraints for the basic optimal strategy model to represent the real situation. We have proposed a simulation-based algorithm to solve the model and apply it to the Beijing Subway to demonstrate the feasibility of the model. The application of the proposed approach has been demonstrated using the computational results for transit networks originating from practice. (shrink)

Can you rationally double-check what you already know? In this paper, I argue that you can. Agents can know that something is true and rationally double-check it at the very same time. I defend my position by considering a wide variety of cases where agents double-check their beliefs to gain epistemic improvements beyond knowledge. These include certainty, epistemic resilience, and sensitivity to error. Although this phenomenon is widespread, my proposal faces two types of challenges. First, some have defended ignorance norms, (...) on which agents are only allowed to inquire about things they don't already know. Second – motivated by strong conceptions of belief or pragmatic encroachment – some have argued that double-checking destroys knowledge. I argue that these competing views fail to capture both the epistemic value of double-checking and the many reasons why agents might double-check. Moreover, they rely on overly strong assumptions about what inquiry, knowledge, or belief requires. Finally, I marshal linguistic data in favor of the compatibility of knowledge and double-checking. (shrink)

We consider the model checking problem for Hybrid Logic. Known algorithms so far are global in the sense that they compute, inductively, in every step the set of all worlds of a Kripke structure that satisfy a subformula of the input. Hence, they always exploit the entire structure. Local model checking tries to avoid this by only traversing necessary parts of the input in order to establish or refute the satisfaction relation between a given world and a formula. We present (...) a framework for local model checking of Hybrid Logic based on games. We show that these games are simple reachability games for ordinary Hybrid Logic and weak Büchi games for Hybrid Logic with operators interpreted over the transitive closure of the accessibility relation of the underlying Kripke frame, and show how to solve these games thus solving the local model checking problem. Since the first-order part of Hybrid Logic is inherently hard to localise in model checking, we give examples, in the end, of how global model checkers can be optimised in certain special cases using well-established techniques like fixpoint approximations and divide-and-conquer algorithms. (shrink)

We investigate a SAT-based bounded model checking method for EMTLK that is interpreted over timed models generated by timed interpreted systems. In particular, we translate the existential model checking problem for EMTLK to the existential model checking problem for a variant of linear temporal logic, and we provide a SAT-based BMC technique for HLTLK. We evaluated the performance of our BMC by means of a variant of a timed generic pipeline paradigm scenario and a timed train controller system.

This book is primarily about checking and only derivatively about knowing. Checking is a very common concept for describing a subject’s epistemic goals and actions. Surprisingly, there has been no philosophical attention paid to the notion of checking. In Part I, I develop a sensitivity account of checking. To be more explicit, I analyze the internalist and externalist components of the epistemic action of checking which include the intentions of the checking subject and the necessary externalist features of the method (...) used. Crucially, successfully checking whether p is true requires using a method that is sensitive with respect to p, i.e. a method that would not indicate that p, if p were false. In Part II, I use the distinction between knowing and checking to explain central puzzles about knowledge, particularly puzzles centering on knowledge closure, puzzles concerning bootstrapping and the skeptical puzzle. Moreover, the book clarifies a dispute about modal epistemology, concerning the application of the sensitivity principle. By arguing that sensitivity is necessary for checking but not knowing, I explain where our persisting intuitions about sensitivity have their place in epistemology. (shrink)

The development of mathematics toward greater precision has led, as is well known, to the formalization of large tracts of it, so that one can prove any theorem using nothing but a few mechanical rules. -- Godel [11].

This is a brief report on results reported at length in our paper [2], made for the purpose of a presentation at the workshop to be held in November 2011 in Cambridge on the Principia Mathematica of Russell and Whitehead ([?], hereinafter referred to briefly as PM ). That paper grew out of a reading of the paper [3] of Kamareddine, Nederpelt, and Laan. We refereed this paper and found it useful for checking their examples to write our own independent (...) computer type-checker for the type system of PM ([1]), which led us to think carefully about formalization of the language and the type system of PM A modern mathematical logician reading PM finds that it is not completely formalized in a modern sense. The type theory in particular is inarguably not formalized, as no notation for types is given at all! In PM itself, the only type annotations which appear are occasional numerical indices indicating order; the type notation we use here extends one introduced later by Ramsey. The authors of PM regard the absence of explicit indications of type as a virtue of their system: they call it “systematic ambiguity”; modern computer scientists refer to this as “polymorphism”. The language of PM is also not completely formalized, and it is typographically inconvenient for computer software to which ASCII input is to be given. The notation of PM for abstractions (propositional functions) does not use head binders; the order of the arguments of a complex expression is determined by the alphabetical order of the bound variables. For example ˆa < ˆb is the “less than” relation while ˆb < ˆa is the “greater than” relation (this is indicated by the alphabetical order of the variables). In PM , the fact that a variable is bound in a propositional function is indicated by circumflexing it. Variables bound by quantifiers are not circumflexed. A feature of the notation of [3], carried over into ours, is that no circumflexes are used: notations for propositions and the corresponding propositional functions are identical.. (shrink)

In a congested large-scale subway network, the distribution of passenger flow in space-time dimension is very complex. Accurate estimation of passenger path choice is very important to understand the passenger flow distribution and even improve the operation service level. The availability of automated fare collection data, timetable, and network topology data opens up a new opportunity to study this topic based on multisource data. A probability model is proposed in this study to calculate the individual passenger’s (...) path choice with multisource data, in which the impact of the network time-varying state on passenger path choice is fully considered. First, according to the number and characteristics of OD candidate paths, the AFC data among special kinds of OD are selected to estimate the distribution of passengers’ walking time and waiting time of each platform. Then, based on the composition of path travel time, its real-time probability distribution is formulated with the distribution of walking time, waiting time, and in-vehicle time as parameters. Finally, a membership function is introduced to evaluate the dependence between passenger’s travel time and the real-time travel time distribution of each candidate path and take the path with the largest membership degree as passenger’s choice. Finally, a case study with Beijing Subway data is applied to verify the effectiveness of the model presented in this study. We have compared and analysed the path calculation results in which the time-varying characteristics of network state are considered or not. The results indicate that a passenger’s path choice behavior is affected by the network time-varying state, and our model can quantify the time-varying state and its impact on passenger path choice. (shrink)

Political fact-checkers evaluate the truthfulness of politicians’ claims. This paper contributes to an emerging scholarly debate on whether fact-checkers treat political parties differently in a systematic manner depending on their ideology (bias). We first examine the available approaches to analyze bias and then present a new approach in two steps. First, we propose a logistic regression model to analyze the outcomes of fact-checks and calculate how likely each political party will obtain a truth score. We test our model with (...) a sample of fact-checks from Newtral, a major Spanish fact-checker. Our model would signal bias under two assumptions: a) all political parties are on average equally accurate in their statements; b) the verification method gives precise instructions and is implemented systematically. We investigate this second assumption with a series of interviews with Newtral fact-checkers. We show that standard verification protocols are so loosely implemented that fact-checks reflect a set of journalistic decisions, rather than a bias in the statistical sense. We call for a more rigorous definition of verification methods as a pre-requisite for an unbiased assessment of politician’s claims. (shrink)

In previous work I argued that purely probabilistic accounts of what it takes to promote a desire are mistaken. This is because, I argued, there are desires that it is possible to promote but impossible to probabilistically promote. In a recent article critical of my account, Joshua DiPaolo and Jeffrey Behrends articulate a methodological principle -- Check the Neighborhood -- and claim that respecting this principle rescues pure probabilism from my argument. In this reply, I accept the methodological principle and (...) show that, despite rendering the original argument invalid, there remains a neighboring argument against purely probabilistic accounts of promotion. (shrink)

This chapter examines three prime candidates for de-extinction—namely, the aurochs, the woolly mammoth, and the passenger pigeon. It will be about what these animals were like, why people want to resurrect them, and the methods by which their resurrections could be accomplished.

In his recent book, Knowing and Checking, Guido Melchior argues that, when we attempt to check whether p, we tend to think that we do not know p. Melchior then uses this assumption to explain a number of puzzles about knowledge. One outstanding question for Melchior's account, however, is why this tendency exists. After all, Melchior himself argues that checking is not necessary for knowing, so why would we think that we fail to know that p when we are in (...) the midst of checking that p? I will explore one such suggestion for why this occurs, arguing that the connection between checking and inquiry can shed light on the impact that checking has on knowing. (shrink)

In the introduction the paper presents, based on the work of Michael Devitt, the conflicting ontological positions of Realism and Constructivism. The former insists on the independence of the nature of the world from our conceptual apparatus, language or scientific theories, whereas the latter affirms its dependence. The central part of the paper is concerned with showing that the Realism/Constructivism dispute is unsolvable by way of a thought experiment followed by refutation of the arguments of key constructivists and realists . (...) The views of Hilary Putnam are also briefly assessed and rejected. In conclusion it is argued, partly with recourse to Carnap’s arguments, that the dispute cannot be resolved, that it is a kind of Kantian antinomy, and that being a realist or a constructivist is therefore a matter of decision. In the course of the article a view is also expressed with regard to the nature of philosophy. (shrink)

Yates reviews Janicaud’s critique in its first iteration, then observes what the emphases of its later form indicate about the kind of phenomenology he propounds. The paper highlights the contours of Janicuad's rigorous “minimalism,” his qualified “atheism,” and the peculiar manner in which his self-described pursuit of phenomenological “possibilities” is propelled by his rejection of theological possibilities. The author questions the selective appropriation of Husserl in Janicaud’s adherence to phenomenality and neutrality by underlining ambiguities within Husserl’s early focus on intuition (...) and the now famous bracketing of “transcendence” and/or “God” set forth in. (shrink)

Source: Author: Ombor Pereowei Garrick, Ombor Elizabeth Oshuare, Adumene Sidum This study provides a framework to holistically assess the level of passengers' satisfaction for a given ferry service based on the dominant Design/Operational, Passengers Care/Safety/Security and Environmental categorical factors that define the ferry service operations and influence passengers' satisfaction. A test case carried out for a ferry service offered by a boat operator in the Warri wharf yields a Passengers' Satisfaction Index of 3.84, indicating that the ferry service is in (...) the range of dissatisfactory and moderately satisfactory, which is in good agreement with popular opinions that the service offered by that operator does not satisfy most of the passengers' expectations. The results of the test case proved that the framework reliably and realistically predicts the level of satisfaction the passengers derived from the various segments that define the service offered by a boat operator. This study will assist passengers make informed decision about the choice of operators to patronize. It will also guide operators and regulators to identify and improve those areas of the ferry service that are pertinent to the successful operation of the ferry business. ]]>. (shrink)

This paper described a formal theory of type judgments for propositional logic notations of PM; I felt the need of my own automated type checker to check their examples. The type checker I wrote did indeed serve to help me referee the paper, but also took a rather different approach to notation and typing for propositional functions of PM, which proved worth writing up independently in our own paper: Holmes, M. Randall, “Polymorphic type– checking for the ramified theory of types (...) of Principia Mathematica”, in Fairouz Kamareddine, ed., Thirty–five Years of Automating Mathematics, Kluwer, 2003, pp. 173-215. (shrink)

In this paper, I describe some of the highlights of Melchior’s checking account and then suggest that its explanatory value could be enhanced with a less analyzed concept of checking. This thought inspires a rearguard defense of sensitivity, by no means aiming to rescue it from all its well-known problems, wherein it is suggested that sensitivity fares better as a necessary condition for knowledge when all the bells and whistles with which it has been adorned over the years are stripped (...) away. Finally, I investigate a recognizably Moorean position involving methods that can be construed as sensitive, such that persons using them can claim to have checked that skeptical hypotheses are false. (shrink)

This article argues that, at first, there appears to be little space for feminism in Virilio's general critique of the loss of physical and mental territories under the impact of technologies and teletechnologies. Allusions to women are mainly taken up in general arguments about progressive immobilization of humans. One exception, however, is a recurring passage of woman as carrier of man. This scene makes of woman a privileged mediator between immanence and movement and, through the introduction of Eros, even between (...) physical, grounded space and ungrounded mobility. (shrink)

Guido Melchior’s important and rich book (Melchior _Knowing and Checking. __An Epistemological Investigation_ 2019 ) draws our attention to the much neglected topic of checking. There are many new leads to follow. Here, I will pick a few that seem to me to allow the most room for discussion and disagreement: the alleged modal profile of checking (Sect. 1), the contrastive aspects of checking (Sect. 2), and the relation of checking to closure (Sect. 3). I will end with two smaller (...) points worth bringing up here (Sect. 4). (shrink)

Model checking is a widely used technique that aids in the designand debugging of reactive systems. This paper gives an overview onthe theory and algorithms used for model checking, with a biastowards automata-theoretic approaches and linear-time temporallogic. We also describe elementary abstraction techniques useful forlarge systems that cannot be directly handled by model checking.

Double‐checking one's reasoning is a perfectly normal way of responding to a disagreement between peers. I argue that conciliationist approaches lack the resources to accommodate this phenomenon adequately. On the one hand, conciliationists cannot claim that double‐checking is a rationally impermissible response to disagreement because a compelling case for its permissibility appeals to arguments analogous to those often used by conciliationist in favour of their own view. On the other, they lack the resources to accommodate double‐checking as a rationally permissible (...) response to disagreement. To show this, I draw a distinction between strong and moderate versions of conciliationism. The strong version accepts, whereas the moderate version rejects, that the conciliatory obligation exhausts the rational requirements engendered by disagreements. Strong conciliationists cannot explain the motivation for someone to double‐check if they have followed the conciliationists advice. Moderate conciliationists who try to make space for double‐checking are forced to concede that disputants can respond rationally to disagreement without lowering their confidence in the disputed belief. (shrink)

Researchers are concerned about whether manipulations have the intended effects. Many journals and reviewers view manipulation checks favorably, and they are widely reported in prestigious journals. However, the prototypical manipulation check is a verbal (rather than behavioral) measure that always appears at the same point in the procedure (rather than its order being varied to assess order effects). Embedding such manipulation checks within an experiment comes with problems. While we conceptualize manipulation checks as measures, they can also (...) act as interventions which initiate new processes that would otherwise not occur. The default assumption that manipulation checks do not affect experimental conclusions is unwarranted. They may amplify, undo, or interact with the effects of a manipulation. Further, the use of manipulation checks in mediational analyses does not rule out confounding variables, as any unmeasured variables that correlate with the manipulation check may still drive the relationship. Alternatives such as nonverbal and behavioral measures as manipulation checks and pilot testing are less problematic. Reviewers should view manipulation checks more critically, and authors should explore alternative methods to ensure the effectiveness of manipulations. (shrink)