Several studies have demonstrated that individuals’ ability to perceive a speech sound contrast is related to the production of that contrast in their native language. The theoretical account for this relationship is that speech perception and production have a shared multimodal representation in relevant sensory spaces. This gives rise to a prediction that individuals with more narrowly defined targets will produce greater separation between contrasting sounds, as well as lower variability in the production of each sound. However, empirical studies that (...) tested this hypothesis, particularly with regard to variability, have reported mixed outcomes. The current study investigates the relationship between perceptual ability and production ability, focusing on the auditory domain. We examined whether individuals’ categorical labeling consistency for the American English /ε/–/æ/ contrast, measured using a perceptual identification task, is related to distance between the centroids of vowel categories in acoustic space and to two measures of production variability: the overall distribution of repeated tokens for the vowels and the proportional within-trial decrease in variability as defined as the magnitude of self-correction to the initial acoustic variation of each token. No significant associations were found between categorical labeling consistency and vowel contrast distance, between categorical labeling consistency and area of the ellipse, or between categorical labeling consistency and centering ratio. These null results suggest that the perception-production relation may not be as robust as suggested by a widely adopted theoretical framing in terms of the size of auditory target regions. However, the present results may also be attributable to choices in implementation that should be subject to further investigation. (shrink)

The skill model of wisdom argues that practical wisdom can be best understood in terms of practical skill or expertise, and the model is thought to have the characteristic of focusing on how wise people think rather than how wise people feel. However, from the perspective of Kunzmann and Glück, “it is time for an ‘emotional revolution’ in wisdom research, which will contribute to a more balanced view on wisdom that considers emotional factors and processes as equally typical of wisdom (...) as are cognitive and reflective factors” (Kunzmann U, Gluck J [2019] Wisdom and emotion. In: Sternberg R, Gluck J (eds) The cambridge handbook of wisdom. Cambridge University Press, Cambridge, pp 575–601). Kunzmann and Glück’s appeal for this emotional revolution is significant and intriguing because the inclusion of an explanation of the role of emotion in wisdom can contribute to developing the skill model of wisdom into a more comprehensive framework that recognizes the intricate relation between wisdom and emotions. In this paper, I shall propose and develop a skill account of the emotions of the wise to serve as a supplement to the skill model of wisdom. According to this account, first, at the critical level, having emotions and emotional competence as elements is not essential to wisdom; second, at the theoretical level, a wise person feels an emotion E if and only if E is strategically rational for the wise person; and third, at the metatheoretical level, the primary aim of the skill account is to explain why wise people feel in a particular way rather than to describe how wise people feel. (shrink)

What is wisdom? What does a wise person know? Can a wise person know how to act and live well without knowing the whys and wherefores of his own action? How is wisdom acquired? This Element addresses questions regarding the nature and acquisition of wisdom by developing and defending a skill theory of wisdom. Specifically, this theory argues that if a person S is wise, then (i) S knows that overall attitude success contributes to or constitutes well-being; (ii) S knows (...) what the best means to achieve well-being are; (iii) S is reliably successful at acting and living well (in light of what S knows); and (iv) S knows why she is successful at acting and living well. The first three sections of this Element develop this theory, and the final two sections defend this theory against two objections to the effect that there are asymmetries between wisdom and skill. (shrink)

Contemporary philosophers have contributed to the development of the skill model of wisdom, according to which practical wisdom is practical skill. However, the model appears to be limited in its explanatory power, since there are asymmetries between wisdom and skill: A person with practical wisdom can and should deliberate about the end being pursued; by contrast, a person with a particular practical skill cannot deliberate about the end of the skill, and even if she can, she is not required to (...) do so. In this paper, I undermine these widely held asymmetries by elucidating the unnoticed nature of skill. (shrink)

Philosophy and Phenomenological Research, Volume 104, Issue 3, Page 606-622, May 2022.

Anti-intellectualists in epistemology argue for the thesis that knowing-how is not a species of knowing-that, and most of them tend to avoid any use of the notion “knowing-that” in their explanation of intelligent action on pain of inconsistency. Intellectualists tend to disprove anti-intellectualism by showing that the residues of knowing-that remain in the anti-intellectualist explanation of intelligent action. Outside the field of epistemology, some philosophers who try to highlight the nature of their explanation of intelligent action in certain fields, such (...) as ethics, tend to classify themselves as intellectualist simply because they appeal to the notion of knowing-that in their explanation. In a word, the idea of knowing-that is harmful to the anti-intellectualist explanation of intelligent action, whether from an insider or outsider perspective. In this paper, I argue that these tendencies are unjustified because they are based on an unclear conception of anti-intellectualism. I shall use Gilbert Ryle’s anti-intellectualism as a paradigm with which to describe anti-intellectualism and to illustrate why the notion of knowing-that is not harmful to but is, on the contrary, beneficial to the anti-intellectualist explanation of intelligent action. If my explication of Ryle’s anti-intellectualism is correct, then most anti-intellectualists in the literature blindly worry about the notion of knowing-that, most intellectualists fire into the wrong flock, and some philosophers outside epistemology mischaracterize their own position. (shrink)

In “Knowing How”, Jason Stanley and Timothy Williamson (2001) propose an intellectualist account of knowledge-how, according to which all knowledge-how is a type of propositional knowledge about ways to act. In this article, I examine this intellectualist account by applying it to the epistemology of language. I argue that (a) Stanley and Williamson mischaracterize the concept of knowledge-how in the epistemology of language, and (b) intellectualism about knowledge of language fails in its explanatory task. One lesson that can be drawn (...) from this case study is that Stanley and Williamson's intellectualism is limited in its explanatory scope and power insofar as it cannot explain the knowledge of language, which is usually conceived as knowledge-how and as non-propositional in character. Their intellectualist claim that all knowledge-how is knowledge-that should be withdrawn. (shrink)

Human excellences such as intelligence, morality, and consciousness are investigated by philosophers as well as artificial intelligence researchers. One excellence that has not been widely discussed by AI researchers is practical wisdom, the highest human excellence, or the highest, seventh, stage in Dreyfus’s model of skill acquisition. In this paper, I explain why artificial wisdom matters and how artificial wisdom is possible (in principle and in practice) by responding to two philosophical challenges to building artificial wisdom systems. The result is (...) a conceptual framework that guides future research on creating artificial wisdom. (shrink)

Knowing-how is currently a hot topic in epistemology. But what is the proper subject matter of a study of knowing-how and in what sense can such a study be regarded as epistemological? The aim of this paper is to answer such metaepistemological questions. This paper offers a metaepistemology of knowing-how, including considerations of the subject matter, task, and nature of the epistemology of knowing-how. I will achieve this aim, first, by distinguishing varieties of knowing-how and, second, by introducing and elaborating (...) the concept of hybrid knowing-how, which entails a combination of a ground-level ability and a meta-level perspective on that ability. The stance I wish to advocate is that the epistemology of knowing-how is a normative discipline whose main task is to study the nature and value of human practical intelligence required to do things in a particular manner. (shrink)

What is the nature and structure of phronesis or practical wisdom? According to the view widely held by philosophers and psychologists, a person S is wise if and only if S knows how to live well. Given this view of practical wisdom, the guiding question is this: What exactly is “knowing how to live well”? It seems that no one has a clear idea of how to answer this simple but fundamental question. This paper explores knowing how to live well (...) (or “life know-how”) by showing how its nature and structure can be understood through contemporary epistemology of knowledge-how. I will achieve this by doing the following. In Section I, I highlight the two as-yet unanswered “integration questions” about life know-how. In Section II, I explain why the epistemology of knowledge-how has good potential to address the integration questions. In Sections III and IV, I construct two positions—intellectualism and anti-intellectualism—for the epistemology of life know-how and show how they address the two integration questions. In Section V, I show how the epistemology of life know-how established in the previous sections can be used in the philosophy of wisdom and the psychology of wisdom. (shrink)

How can we acquire understanding? Linda Zagzebski has long claimed that understanding is acquired through, or arises from, mastering a particular practical technê. In this paper, I explicate Zagzebski’s claim and argue that the claim is problematic. Based on a critical examination of Zagzebski’s claim, I propose, in conclusion and in brief, a new claim regarding the acquisition of understanding.

The product presentation videos on E-commerce platforms have a significant influence on consumers' purchase decisions, and enterprises have focused on choosing the type of product presentation videos. Based on the resource matching theory, mental imagery theory and cue utilization theory, this study investigated the influence of product presentation videos type on consumers' purchase intention and the moderating effect of product rating. Through three pre-experiments and two formal experiments, the results showed that the product usage video has a stronger effect on (...) consumers' purchase intention more than the product appearance video, which is mediated by perceived diagnosticity and mental imagery. In addition, product rating moderated the influence of product presentation videos type on consumers' purchase intention. The product usage video would improve consumers' purchase intention more than the product appearance video when the product rating is high; however, there is no significant difference in the impact of two types of videos on consumers' purchase intention when the product rating is low. This study supplements the research on product presentation videos and provides a reference for online retailers to select effective product presentation videos. (shrink)

Recently virtue ethicists, such as Julia Annas and Matt Stichter, in order to explain what a moral virtue is and how it is acquired, suggest modeling virtue on practical expertise. However, a challenging issue arises when considering the nature of practical expertise especially about whether expertise requires articulacy, that is, whether an expert in a skill is required to possess an ability to articulate the principles underlying the skill. With regard to this issue, Annas advocates the articulacy requirement, while Stichter (...) denies. Stichter raises two objections to Annas’s requirement: first, Annas provides no argument for the requirement; second, there exist counterexamples in which there are experts who cannot articulate what and why they did in skilled performance. In this paper I shall show that Annas did provide an argument and can respond to the counterexamples; however, her argument and response are not convincing. Instead, I construct a new argument for the articulacy requirement by which I call the argument from success-conduciveness. The main idea involved in this new argument, i.e., articulacy is success-conducive, supports further that ethical expertise requires articulacy due to the seriousness of morality. (shrink)

Ruyu HungNational Chiayi University, TaiwanThis is a collective writing experiment of PESA members, orchestrating the Philosophy of Education in a New Key regarding East Asia. In 2016 the pioneerin...

One of the main challenges in the philosophy of language is determining the form of knowledge of the rules of language. Michael Dummett has put forth the view that knowledge of the rules of language is a kind of implicit knowledge; some philosophers have mistakenly conceived of this type of knowledge as a kind of knowledge-that . In a recent paper in this journal, Patricia Hanna argues against Dummett’s knowledge-that view and proposes instead a knowledge-how view in which knowledge of (...) the rules of language is a kind of practical knowledge, like an agent’s non-propositional knowledge of counting. In this paper I argue, first, that Hanna misunderstands Dummett’s conception of knowledge of linguistic rules, and, second, that Dummett’s considerations of practical knowledge of language pose a problem for Hanna’s knowledge-how view. At the end of the paper, I briefly sketch an account of practical knowledge of language that meets the requirements set by Dummett. (shrink)

According to Dreyfusian anti-intellectualism, know-how or expertise cannot be explained in terms of know-that and its cognates but only in terms of intuition. Hubert Dreyfus and Stuart Dreyfus do not exclude know-that and its cognates in explaining skilled action. However, they think that know-that and its cognates (such as calculative deliberation and perspectival deliberation) only operate either below or above the level of expertise. In agreement with some critics of Dreyfus and Dreyfus, in this paper, I argue that know-that and (...) its cognates are constitutive of rather than external to know-how and expertise. However, unlike those critics, who argue for this point only from a phenomenological point of view, my argument adopts a (telic) normative point of view. (shrink)

Tennis champion Maria Sharapova has a habit of grunting when she plays on the court. Assume that she also has a habit of hitting the ball in a certain way in a certain situation. The habit of on-court grunting might be bad, but can the habit of hitting the ball in a certain way in a certain situation be classified as intelligent? The fundamental questions here are as follows: What is habit? What is the relation between habit and skill? Is (...) there such a thing as intelligent habit? In this paper I expound the nature of habit by developing and defending a Rylean conception of habit, according to which an acquired disposition is a habit if and only if the manifestation of the disposition is repeated, automatic, and uniform. One implication of this conception is that there is no such thing as intelligent habit. A practical application in athletic expertise is that sport coaches can help athletes go beyond repeated, automatic, and uniform dispositions in sport. (shrink)

According to the universality thesis, the epistemic properties referred to by the English epistemic verb “know” contained in the expressions of the form “S knows that p” or “S knows how to φ‎” are shared by the translations of the epistemic verb in all other languages such as Chinese, Japanese, Korean, Russian, and so on. Some doubt that there is reason to think the universality thesis is true because little or nothing is shown about the meanings and uses of the (...) epistemic terms in languages other than English. Critics of the universality thesis find counterevidence to the thesis; that is, the evidence demonstrates that translations of the epistemic verb “know” are used differently in some languages from the way “know” is used in English. In this chapter, the authors examine the effectiveness of such counterevidence. (shrink)

Epistemology of language, a branch of both epistemology and the philosophy of language, asks what knowledge of language consists in. In this paper, I argue that such an inquiry is a pointless enterprise due to its being based upon the incorrect assumption that linguistic competence requires knowledge of language. However, I do not think the phenomenon of knowledge of language is trivial. I propose a virtue-theoretic account of linguistic competence, and then explain the phenomenon from a virtue-semantic point of view.

In this paper, I propose a virtue-theoretic approach to semantics, according to which the study of linguistic competence in particular, and the study of meaning and language in general, should focus on a speaker's interpretative virtues, such as charity and interpretability, rather than the speaker's knowledge of rules. The first part of the paper proffers an argument for shifting to virtue semantics, and the second part outlines the nature of such virtue semantics.

Regulative virtue epistemology argues that intellectual virtues can adjust and guide one’s epistemic actions as well as improve on the quality of the epistemic actions. For regulative virtue epistemologists, intellectual virtues can be cultivated to a higher degree; when the quality of intellectual virtue is better, the resulting quality of epistemic action is better. The intellectual virtues that regulative epistemologists talk about are character virtues (such as intellectual courage and open-mindedness) rather than faculty virtues (such as sight and hearing), since (...) they don’t think that faculty virtues could be cultivated. This article refers to Xunzi’s philosophy, explaining how a regulative faculty-based virtue epistemology is possible. If this explanation works, on the one hand, a new branch of contemporary virtue epistemology is shown, and, on the other hand, a clear theoretical framework of Xunzi’s epistemology is constructed. (shrink)

The aim of this paper is twofold: First, to generalize Quine's epistemology, to show that what Quine refutes for traditional epistemology is not only Cartesian foundationalism and Carnapian reductionism, but also any epistemological program if it takes atomic verificationist semantics or supernaturalism, which are rooted in the linguistic/factual distinction of individual sentences, as its underlying system. Thus, we will see that the range of naturalization in the Quinean sense is not as narrow as his critics think. Second, to normalize Quine's (...) epistemology, to explain in what sense Quinean naturalized epistemology is normative. The reason I maintain that critics miss the point of Quinean naturalized epistemology is that they do not appreciate the close connection between Quine's naturalistic approach and his holistic approach to epistemology. To show this I shall reconstruct Quine's argument for naturalizing epistemology within his systematic philosophy, and focus specifically on his holism and its applications, on which Quine relies both in arguing against traditional epistemology, and in supporting his theses of underdetermination of physical theory and indeterminacy of translation. This is the key to understanding the scope and the normativity of Quine's epistemology. In the conclusion I will point out what the genuine problems are for Quinean naturalized epistemology. (shrink)

Most complex real systems are found to have multiple layers of connectivity and required to be modelled as multiplex networks. One of the extremely critical problems is to reduce the congestion and enhance the transfer capacity, especially in real communication networks with a big data environment. A novel and effective strategy to improve traffic and control congestion is proposed by adding edges according to their weights which are defined by the topology structural properties. Furthermore, which layer is more effective when (...) our strategy is applied is discussed based on its topology structure. Adding edges between nodes whose product of multiplex network betweenness is the highest is confirmed to be more effective, particularly in the layer with stronger community structure. Simulation experiments on both computer-generated and real-world networks demonstrate that our strategy can enhance the transfer capacity of multiplex networks significantly, which is in good agreement with our analysis. (shrink)

Michael Dummett has long argued that we should ascribe implicit knowledge of a meaning-theory to speakers, and that the task of a theory of meaning is to tell us what such knowledge consists in. But he also sees it as a problem that how implicit knowledge is actually used, that is, how a speaker's metalinguistic knowledge of a meaning-theory issues or delivers the speaker's knowledge of meanings of utterances (the delivery problem). In this paper 1argue that Dummett's instrumental construal of (...) implicit knowledge does not and cannot solve the delivery problem. However, I do not suggest Dummett to modify or abandon his instrumental construal; rather, I think he can dissolve the delivery problem by recognizing that knowledge of semantics for a language is not a necessary condition for mastering a language. 1 shall argue this point through Davidson's attitude towards the role of linguistic knowledge and his thesis in his (in)famous paper "A Nice Derangement of Epitaphs.". (shrink)

In this paper I evaluate Michael Dummett's notion of implicit knowledge by examining his answers to these two questions: (1) Why should we ascribe knowledge of a meaning-theory of a language to a language-user, and why the mode of this knowledge is implicit, but not pure theoretical, pure practical, or unconscious in a Chomskian sense? (2) How could a meaning-theory, which is known implicitly, function as a rule to be followed by the language-user? To answer (1) I shall construct Dummett's (...) argument for implicit knowledge, which includes three sub-arguments: the argument from rationality, the argument from dilemma, and the argument from communicability. As to (2), I argue that Dummett's answer confuses knowledge of a meaning-theory with knowledge of a set of grammars. (shrink)

Knowledge of a language is a kind of knowledge, the possession of which enables a speaker to understand and perform a variety of linguistic actions in that language. In this paper, I pursue an agency-oriented approach to knowledge of language. I begin by examining two major agency-oriented models of knowledge of language: Michael Dummett's Implicit Knowledge Model and Jennifer Hornsby's Practical Knowledge Model. I argue that each of these models is inadequate for different reasons. I present an Acquaintance Knowledge Model, (...) in which a speaker's knowledge of a language is a combination of the speaker's first-order linguistic ability and second-order acquaintance with his ability and actions. (shrink)

This dissertation examines the connection between Craig's theorem and scientific instrumentalism. The main question to be answered is whether the former can be used to support the latter. A negative answer to this question is defended in the dissertation. ;The first two chapters present a detailed expository account of the proof of Craig's theorem and also of the process by which theoretical terms are to be eliminated from scientific theories according to the method developed by Craig. Emphasis is placed on (...) those points which are relevant to later discussions. ;There have been several arguments against using the Craigian method of eliminating theoretical terms and against replacing a scientific theory by its Craigian revised theory . The third chapter is devoted to two of those arguments. The first is meant to show that the distinction between observational and theoretical terms is untenable and hence that the Craigian method cannot be used to eliminate theoretical terms. The second is intended to show that a Craigian revised theory does not always preserve the whole inductive power of its original theory and hence that it cannot replace the original theory. Both arguments are analyzed in detail and rejected. ;The fourth chapter argues that Craig's theorem cannot be used to support scientific instrumentalism: it is argued that a Craigian revised theory may lack the explanatory power of its original theory. In the course of arguing the above point, ten outstanding theories of explanation are considered. It is argued that no matter which account of explanation is adopted, a Craigian revised theory cannot always preserve the whole explanatory power of its original theory. ;In the fifth chapter, the "theoretician's dilemma" of Carl G. Hempel's is examined. It is argued that, in virtue of the explanatory shortcoming of the Craigian method, the theoretician's dilemma cannot be used to support scientific instrumentalism. (shrink)

Mathematics is an important foundation for the development of science education. In the past, when instructors taught mathematical concepts of geometry shapes, they usually used traditional textbooks and aids to conduct teaching activities, which resulted in students not being able to understand the principles completely. Nowadays, it has become a trend to integrate emerging technologies into mathematics courses and to use digital instructional aids. Emerging technologies can effectively enhance students’ sensory experience while strengthening their impressions and understandings of subject concepts. (...) In this paper, we apply virtual reality immersive technologies to develop a “virtual reality immersive learning mathematics geometry system,” which is used to teach mathematical geometry concepts. Teachers use the system to develop three basic mathematical geometry learning materials: “Triangular pyramid volume = 1/3 prism volume,” “Cone volume calculation,” and “Triangle center of gravity derivation.” In the experimental activity, the teacher uses virtual reality teaching aids to guide students to learn mathematical geometry concepts in a fun way so that they can achieve the effectiveness of immersive learning. This study explores the impact of using the virtual reality immersive learning mathematics geometry system on students’ technology acceptance, learning motivations, and learning performance. The experimental result showed that using the virtual reality immersive learning mathematics geometry system can improve the learning motivation and learning performance of students. The findings indicated that the experimental group had better learning outcomes after completing the learning tasks of three geometric units. The experimental group used the virtual reality immersive learning mathematics geometry system which can lead to better learning outcomes. According to the ARCS questionnaire, students in the experimental group were confident to understand new subjects. At the same time, the mode of completing the game can effectively give students a sense of accomplishment. The use of emerging technologies in the classroom can be an attractive learning mode for students. (shrink)

The impostor phenomenon refers to a false internal experience of low intelligence or ability that is associated with anxiety, depression, psychological distress, and burnout. The emotions associated with the IP affect not only personal mental health but also patient care. To address this issue, we need to completely understand the prevalence of and factors related to the IP and ways to resolve/overcome IP feelings. The aim of this scoping review was to identify the existing evidence regarding the IP among nursing (...) students and nurses and determine gaps that can be addressed in future research. We conducted our study based on the scoping review methodological framework proposed by Arksey and O’Malley and advanced by Levac et al.. After searching the Embase, PubMed, Cumulative Index to Nursing and Allied Health Literature, Cochrane Library, Web of Science and ProQuest databases, we identified 11 studies for inclusion in this review. We found that while the IP exists in nursing students and nurses, clinical nurse specialist students and final-year nursing students are at significant risk of impostor behavior. We also found that research in the nursing field has focused on the prevalence of and factors related to the IP, but few studies have addressed ways to resolve/overcome IP feelings. Thus, research in this area should be increased. This scoping review presents research gaps that may serve as a starting point for future work on the IP in the nursing field. (shrink)

Ruyu HungNational Chiayi UniversityThis collective writing is intended to portray the contour of philosophy of education in contemporary Taiwan, resounding many beautiful counterparts in EPAT (Bies...

Large foreign firms’ interventions in violent conflicts have drawn increasing research attention. Nonetheless, scant research has investigated how foreign small and medium-sized enterprises (SMEs), which have little capacity in peacebuilding, can protect themselves from violent conflict risk. Drawing upon the instrumental stakeholder theory (IST), this study explores two specific local community-oriented corporate social responsibility (CSR) practices (i.e., corporate philanthropy and workforce localization) as violent conflict risk buffering strategies for foreign SMEs. Further, we examine their varying effects in different institutional environments (...) (i.e., host country media freedom and labor rights protection). Using data from a cross-country survey of Chinese foreign SMEs combined with archival data from multiple sources, we empirically confirm the attenuating effects of both corporate philanthropy and workforce localization on foreign SMEs’ violent conflict risk. Besides, we discover that host country labor rights protection strengthens the mitigation impact of workforce localization on violent conflict risk. Our study advances the literature on IST and CSR by revealing the risk mitigation mechanism of CSR activities for foreign SMEs and elucidating its institutional boundary conditions. (shrink)

This article aims at developing a phronesis-oriented philosophical counselling, with a focus on the idea of semantic sentiment. In Section 1, we elucidate the characteristics of phronesis-oriented approach to philosophical counselling and state our reason for adopting this approach. In Section 2, we consider three visions of phronesis-oriented philosophical counselling, i.e., the Socratic vision, the Platonic vision, and the skill-based vision, and argue for the third vision. In Sections 3 and 4, we show how to practice such phronesis-oriented philosophical counselling (...) by introducing, exploring, and applying the idea of semantic sentiment. (shrink)

This study is intended to create an innovative contextual English learning environment making use of the widely used communication software, LINE ChatBot, based on the Artificial Intelligence Markup Language, in order to improve speaking and listening ability among learners. A total of 73 students were invited to participate in learning activities involving a 4-week English conversation exercise including both speaking and listening. Additionally, in order to explore the influence of competition on language acquisition, we added competition characteristics to the learning (...) activities in the experimental group to enhance learning motivation and learning outcomes. The results showed that with the help of the LINE ChatBot contextual learning environment, the performance of both groups of students was slightly enhanced, but no significant differences were found. Meanwhile, extrinsic motivation in both the experimental and control group was improved if they spoke anonymously. That is, the contextual learning environment based on the LINE ChatBot significantly improved the learners’ English speaking and listening ability. In addition, the results showed that the addition of a competition element effectively enhanced the learners’ intrinsic motivation to learn English on the LINE ChatBot. (shrink)

This paper presents an adaptive fuzzy sliding-mode controller for multiple Euler–Lagrange systems communicated with directed topology. Based on the graph theory and Lyapunov–Krasovskii functions, a delay-dependent sufficient condition for the existence of sliding surfaces is given in terms of linear matrix inequalities. The asymptotic stability is analyzed by using the Lyapunov method in the presence of unknown parametric dynamics, actuator faults, and time-varying delays. The usage of adaptive techniques is to adapt the unknown parameters so that the objective of globally (...) asymptotic stability is achieved. Finally, simulation results are provided to illustrate the effectiveness of the proposed control scheme. (shrink)

Alcohol use disorder is one of the most common substance use disorders contributing to both behavioral and cognitive impairments in patients with AUD. Recent neuroimaging studies point out that AUD is a typical disorder featured by altered functional connectivity. However, the details about how voxel-wise functional coordination remain unknown. Here, we adopted a newly proposed method named functional connectivity density to depict altered voxel-wise functional coordination in AUD. The novel functional imaging technique, FCD, provides a comprehensive analytical method for brain's (...) “scale-free” networks. We applied resting-state functional MRI toward subjects to obtain their FCD, including global FCD, local FCD, and long-range FCD. Sixty-one patients with AUD and 29 healthy controls were recruited, and patients with AUD were further divided into alcohol-related cognitive impairment group and non-cognitive impairment group. All subjects were asked to stay stationary during the scan in order to calculate the resting-state gFCD, lFCD, and lrFCD values, and further investigate the abnormal connectivity alterations among AUD-NCI, ARCI, and HC. Compared to HC, both AUD groups exhibited significantly altered gFCD in the left inferior occipital lobe, left calcarine, altered lFCD in right lingual, and altered lrFCD in ventromedial frontal gyrus. It is notable that gFCD of the ARCI group was found to be significantly deviated from AUD-NCI and HC in left medial frontal gyrus, which changes probably contributed by the impairment in cognition. In addition, no significant differences in gFCD were found between ARCI and HC in left parahippocampal, while ARCI and HC were profoundly deviated from AUD-NCI, possibly reflecting a compensation of cognition impairment. Further analysis showed that within patients with AUD, gFCD values in left medial frontal gyrus are negatively correlated with MMSE scores, while lFCD values in left inferior occipital lobe are positively related to ADS scores. In conclusion, patients with AUD exhibited significantly altered functional connectivity patterns mainly in several left hemisphere brain regions, while patients with AUD with or without cognitive impairment also demonstrated intergroup FCD differences which correlated with symptom severity, and patients with AUD cognitive impairment would suffer less severe alcohol dependence. This difference in symptom severity probably served as a compensation for cognitive impairment, suggesting a difference in pathological pathways. These findings assisted future AUD studies by providing insight into possible pathological mechanisms. (shrink)

The meshed control theory assumes that cognitive control and automatic processes work together in the natural attention of experts for superior performance. However, the methods adopted by previous studies limit their capacity to provide in-depth information on the neuromotor processes. This experiment tested the theory with an alternative approach. Twelve skilled golfers were recruited to perform a putting task under three conditions: (1) normal condition, with no focus instruction (NC), (2) external focus of attention condition (EC), and (3) internal focus (...) of attention condition (IC). Four blocks of 10 putts each were performed under each condition. The putting success rate and accuracy were measured and electroencephalographies (EEGs) were recorded. The behavioral results showed that the NC produced a higher putting success rate and accuracy than the EC and IC. The EEG data showed that the skilled golfers’ attentional processes in the NC initially resembled those in the EC and then moved toward those in the IC just before putting. This indicates a switch from more automatic processes to cognitive control processes while preparing to putt. The findings offer support for the meshed control theory and indicate the dynamic nature of neuromotor processes for the superior performance of athletes in challenging situations. (shrink)

Violence has been linked to the co-occurrence of cognitive dysfunction and altered activations in several brain regions. Empirical evidence demonstrated the benefits of acute exercise on motor inhibition and error detection and their neuronal processing. However, whether such effects also hold for the population with violent behaviors remains unknown. This study examined the effects of acute aerobic exercise on inhibitory control and error monitoring among violent offenders. Fifteen male violent offenders were counterbalanced into experimental protocols, which comprised a 30-min moderately (...) aerobic exercise [60% heart rate reserve] and a 30-min reading control session. After each session, participants performed an emotional stop signal task while event-related potentials were recorded simultaneously. Results showed insignificant changes in ERPs components [i.e., N2, P3, error-related negativity, and error-positivity amplitudes] and the behavioral performance in go condition, stop accuracy, and post-error adjustments by exercise. However, the current study demonstrated that the acute exercise facilitated stop signal reaction time when compared to the control session regardless of emotional conditions. This is the first research to exhibit the improvements in inhibitory performance by acute exercise for violent offenders. Most importantly, this effect was independent of affective settings, expanding the existing knowledge of the influences of acute exercise on cognition. Our findings implicate the perspective of acute exercise for clinical and correctional practices. (shrink)

Ben cheng guo yi li lun jia gou er fei li shi xu shu de jiao du yan jiu zao qi ru jia de wang ba zhi bian, zong jie wang dao ba dao de zhu yao nei rong, shu li wang ba zhi bian suo guan zhu de si xiang zhu ti, fen xi qi si xiang luo ji jia gou, tan jiu wang ba zhi bian zai Zhongguo chuan tong zheng zhi zhe xue ji Zhongguo chuan tong (...) she hui zhong di ying xiang he yi yi, bing yi xian dai zheng zhi zhe xue de shi jiao fen xi qi li lun de shi wa jue wang ba zhi bian de ji ji yi yi. (shrink)