In this paper, a concise robust control law based on Backstepping for marine engine speed regulation is presented with the uniform asymptotic stability of the closed-loop system proved by Lyapunov synthesis, and the control parameters have obvious physical meaning. Furthermore, parameter determination method is given by virtue of closed-loop gain shaping algorithm. To overcome the perturbation due to load or interference change, variable universe fuzzy inference is introduced to optimize the control system on-line. Compared with the existing research literature, the (...) design method and performance of the controller are more in line with the ocean engineering practice. The results of the simulations of the proposed controller are presented and compared. (shrink)

BackgroundThe number of students enrolled in higher education in China accounts for more than one-fifth of the world, and universities, as a community of faculty, staff and scholars, currently do not have a scale that specifically assesses the well-being of the population in the environment of Chinese universities. However, the University of Pittsburgh has developed a comprehensive well-being scale, referred to as the Pitt Wellness Scale, specifically to measure people’s well-being in a university environment.AimsInvestigate the psychometric properties of the Pitt (...) Wellness Scale in Chinese university environmental samples.MethodsThe original scale was culturally adapted and modified through expert consultation, a random sample of 1870 current faculty, staff, and students were selected for the questionnaire survey. Exploratory factor analysis and confirmatory factor analysis were used to investigate the potential factor structure of the Chinese Revision of the Pitt Wellness Scale and to measure its reliability and validity. Finally, the factors that affect people’s well-being in the Chinese university environment were explored.ResultsThe Chinese Revision of the Pitt Wellness Scale retained 30 items, and the EFA supports a five-factor structure, which differed from the results of the original scale, and the CFA results showed that the model fitted well. The discriminant validity of the modified Chinese scale was excellent. The overall Omega coefficient of the scale was 0.958, and the reliability of the retest after 4 weeks was 0.821.ConclusionThe Chinese Revision of the Pitt Wellness Scale possesses satisfactory psychometric properties, and it can be considered an instrument for assessing personal well-being in Chinese university environment. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Diacritics 30.4 (2000) 15-37 [Access article in PDF] Kant's Strange LightRomanticism, Periodicity, and the Catachresis of Genius Orrin N. C. Wang We might say that in deconstruction history is always posed as a question, at once urgent, ubiquitous, and insoluble, whereas ideological demystification conceives of its relation to history as an answer, a solution, to its critical hermeneutic. Certainly, this critical truism has special force in Romantic studies, (...) a field very much shaped by the complex relation between deconstruction and ideological critique over the last twenty-five years. But it could just as well be said that the full implications of this relation are especially clarified by the field of Romantic studies, not least because its object of study replays the tensions between these two modes of inquiry. Studying Romanticism means knowing it as a historical period but also knowing it as a figure that stands for something else: an aesthetic practice, a form of consciousness, a political aspiration, an ideology, the possibility of historicity itself. That as a figure Romanticism can be either transhistorical or tied to its historical identity makes its situation all the more complicated and compelling. Romanticism especially dramatizes the interlocking relation between period identity and trope, and the investment of literary studies in that dynamic. Romanticism is the period metaphor that both stabilizes and disrupts the very concept of period metaphors.1 The deconstruction and demystification of Romanticism is very much about the deconstruction and demystification of history, its existence as either question or calculation, trope or immanent being.But even as Romanticism asserts its special relation to history it must also confront an opposite trajectory, how its meaning is best understood through a constellation of other, larger historical identities, such as the Enlightenment and modernity itself. At present the potential disciplinary reorganization of Romanticism into the long eighteenth century is the most vivid academic expression of the question, where does the historical specificity of Romanticism reside, within itself or something larger, or both?Sorting this issue out is certainly a historical proposition, but as Romanticism's special relation to history reminds us, it is also, in Paul de Man's sense, rhetorical. Which is to say, Romanticism's relation to history is, paradoxically, not special-or, more precisely, it is a trope for something pervasive among all the period fields of literary studies, insofar as they remain particular and distinct from one another. This includes those historical entities that might subsume or entangle with Romanticism itself, that would enact historicity by absorbing a field so intent on both the enabling and worrying of historical thought. Approached tropologically, the relation of Romanticism to these larger historical periods is not simply about events and formations that constitute [End Page 15] the boundaries of historical identities. It is also about best identifying and clarifying the workings of figure that create the intelligence of such periodicity.Such labor, what de Man designated innocently enough by the term "reading," calls for its own crossing of a particular set of boundaries. A philosophical text, generated by the entanglement between Romanticism and the eighteenth-century Enlightenment, might contain sections exemplary in their recording of the interstice between trope and historical periodization. Immanuel Kant's short meditation on genius in the third Critique is, like the rest of his book, about the limits and possibilities of the judging subject; his words on genius are also specifically about the artistically creative subject. In resolving the contradictions between aesthetic judgment and creation, Kant transforms the solar light of human genius into the historical genius of the Enlightenment, which is very much the linguistic genius of Romanticism. This all occurs in a register not of consciousness or of historical truth, but of something else before either's constative realization.Kant's text is especially telling in its reflexive expression of this situation, so much so that it helps illuminate the sharp distinction between deconstruction and ideological demystification. For if deconstruction always poses history as the pressure of an insoluble, omnipresent question, it does so through figure, before truth. In contrast, ideological demystification, with... (shrink)

Name der Zeitschrift: Cognitive Linguistics Jahrgang: 27 Heft: 2 Seiten: 299-306.

Walter Benn Michaels's The Shape of the Signifier: 1967 to the End of History makes the ostensive cul-de-sac of identity politics the dominant symptom of postmodernism per se. The Shape connects its argument to the controversy over intention and interpretation created by Steven Knapp and Walter Benn Michaels's twenty-year-old essay "Against Theory." This very connection, however, highlights the not-quite-acknowledged presence of a certain type of romanticism in both works that each also wants to attack. Misunderstanding Paul de Man's notion of (...) materiality, Michaels becomes the latest thinker hoping to free us from the inchoateness of romantic sensation, both as the indulgence of sensory experience and the cognitive sloppiness of nonmeaning as the sense of meaning. Far from a Fukuyama-inspired postmodern condition, Michaels's scenario actually adumbrates a basic problem between romanticism and modernism-as-modernity. (shrink)

The widespread use of online information resources by translation students has motivated an increasing number of researchers to investigate the relationship between online information seeking and translation performance. However, these studies mainly address the direct effect of online information seeking on translation performance, thus failing to explore and identify the internal psychological mechanisms. This study, therefore, explores the mediating role of translation self-efficacy in the relationship between online information seeking and translation performance. A total of 314 translation students in China (...) completed questionnaires on online information seeking and translation self-efficacy, and translation performance was measured by assessing the quality of a translation task given to them. Results showed that translation self-efficacy partially mediated the association between online information seeking and students’ translation performance. These findings can contribute to our understanding of the role that translation self-efficacy plays in information seeking behaviors and the emotional states of translation students in translator training. (shrink)

We evaluated the relationships of daily sleep duration and inconsistency with soft tennis competitive performance among 15 healthy collegiate soft tennis players (13 male, 2 female, mean age = 19.7 ± 0.8 years, height = 170.8 ± 7.3 cm, weight = 60.3 ± 5.6 kg, soft tennis experience = 8.7 ± 2.0 years). Sleep duration and inconsistency were determined by a 50-day sleep diary, which recorded sleep and wake times of sleep. Soft tennis athletic performance was evaluated by a service (...) and baseline stroke accuracy test and the spider run test. Mean sleep duration was 7.4 ± 1.7 h. No correlation was found between long-term mean sleep duration and athletic performance. But inconsistency in sleep duration (SD of sleep duration) was inversely correlated with service score after controlling for soft tennis experience and sex (r = −0.56, p = 0.046). There was no significant relationship between sleep inconsistency and other athletic performance. This result indicates that reducing the instability of sleep duration (i.e., sleep regular hours) in the long-term may have a positive effect on soft tennis players’ service performance. Although participants’ current mean sleep duration (7.4 h) was not as sufficient as the recommendation in sleep extension experiments (9–10 h), it revealed the importance for athletes to maintain regular sleep in daily life. (shrink)

With the stricter environmental regulations and diminishing fossil-fuel reserves, there is now higher emphasis on exploiting various renewable sources of energy. These alternative sources of energy are usually environmentally friendly and emit no pollutants. However, the capital investments for those renewable sources of energy are normally high, and there are also maintenance cost differences to be considered. Furthermore, due to the intermittency of some of these power sources, reliability issues should be addressed when integrating different power sources. In this article, (...) as an example, the design of hybrid generating systems comprising wind turbine generators, photovoltaic panels, and storage batteries is discussed based on multidisciplinary optimization. In this multisource generation system design, three design objectives are considered, that is, system cost, reliability, and pollutant emissions. (shrink)

We argue that approaches adhering to normative systems can be as fruitful as those by descriptive systems. In measuring people's perception of randomness, discrepancies between human behavior and normative models could have resulted from unknown properties of the models, and it does not necessarily lead to the conclusion that people are irrational or that the normative system has to be abandoned.

During the COVID-19 public health crisis, market failures such as shortage of supplies and soaring prices of anti-epidemic materials – with masks as the core – have occurred. In essence, such anti-epidemic materials have the dual nature of necessities with low elasticity of demand and private products with positive externalities. This research explores the understanding of anti-pandemic materials and how different initiatives, and evaluation to increase availability of necessary resources can be effective in curbing a pandemic. Market regulation results in (...) a non-Pareto optimal allocation of resources and the difficulty of exerting the positive externalities of products. However, in China, the market failure of anti-epidemic materials was quickly resolved, due to the institutional advantages of socialism with Chinese characteristics, the social responsibility drive of domestic enterprises, and cultural genes that focus on equity and concern for the disadvantaged. The optimal allocation of anti-epidemic materials gave access to exerting efficiency and fairness effects, positive external effects, and public effects. (shrink)

Pragmatic Scientific Realism (PSR) urges us to take up the realist aim or the goal of truth although we have good reason to think that the goal can neither be attained nor approximated. While Newton-Smith thinks that pursuing what we know we cannot achieve is clearly irrational, Rescher disagrees and contends that pursuing an unreachable goal can be rational on pragmatic grounds—if in pursuing the unreachable goal one can get indirect benefits. I have blocked this attempt at providing a pragmatic (...) justification for the realist aim of PSR on precisely the same pragmatic grounds—since there is a competing alternative to PSR, and the alternative can provide whatever indirect benefits PSR can offer while being less risky than it is, prudential reasoning favours the alternative to PSR. This undermines the pragmatic case for the realist aim of science since the instrumentalist alternative does not aim at the truth. (shrink)