The H ∞ performance of a class of T-S fuzzy systems with Markovian-jump parameters is analyzed. A state feedback controller is designed for T-S fuzzy systems with Markovian-jump parameters. First, a new modal-dependent Lyapunov function composed of closed-loop functions is constructed, which can fully use system status information. Based on this function, the stability conditions with less conservatism are given by linear matrix inequalities. At the same time, a design algorithm for a state feedback controller is proposed for the Markovian-jump-parameters (...) T-S fuzzy systems, which ensures the system’s stability under the condition of H ∞ − γ performance. Simulation results demonstrate that the mentioned method is accurate and practical. (shrink)

This paper presents the problem of robust and nonfragile stabilization of nonlinear systems described by multivariable Hammerstein models. The objective is focused on the design of a nonfragile feedback controller such that the resulting closed-loop system is globally asymptotically stable with robust H ∞ disturbance attenuation in spite of controller gain variations. First, the parameters of linear and nonlinear blocks characterizing the multivariable Hammerstein model structure are separately estimated by using a subspace identification algorithm. Second, approximate inverse nonlinear functions of (...) polynomial form are proposed to deal with nonbijective invertible nonlinearities. Thereafter, the Takagi–Sugeno model representation is used to decompose the composition of the static nonlinearities and their approximate inverses in series with the linear subspace dynamic submodel into linear fuzzy parts. Besides, sufficient stability conditions for the robust and nonfragile controller synthesis based on quadratic Lyapunov function, H ∞ criterion, and linear matrix inequality approach are provided. Finally, a numerical example based on twin rotor multi-input multi-output system is considered to demonstrate the effectiveness. (shrink)

A fuzzy predictive fault-tolerant control scheme is proposed for a wide class of discrete-time nonlinear systems with uncertainties, interval time-varying delays, and partial actuator failures as well as unknown disturbances, in which the main opinions focus on the relevant theory of FPFTC based on Takagi-Sugeno fuzzy model description of these systems. The T-S fuzzy model represents the discrete-time nonlinear system in the form of the discrete uncertain time-varying delay state space, which is firstly constructed by a set of local (...) linear models and the nonlinear membership functions. The novel improved state space model can be further obtained by extending the output tracking error to the constructed model. Then the fuzzy predictive fault-tolerant control law based on this extended model is designed, which can increase more control degrees of freedom. Utilizing Lyapunov-Krasovskill theory, less conservative delay-range-dependent stable conditions in terms of linear matrix inequality constraints are given to ensure the asymptotically robust stability of closed-loop system. Meanwhile, the optimized cost function and H-infinity performance index are introduced to the stable conditions to guarantee the robust performance and antidisturbance capability. The simulation results on the temperature control of a strong nonlinear continuous stirred tank reactor show that the proposed control scheme is feasible and effective. (shrink)

The works of Paul Grice collected in this volume present his metaphysical defense of value, and represent a modern attempt to provide a metaphysical foundation for value. Value judgments are viewed as objective; value is part of the world we live in, but nonetheless is constructed by us. We inherit, or seem to inherit, the Aristotelian world in which objects and creatures are characterized in terms of what they are supposed to do. We are thereby enabled to evaluate by reference (...) to function and finality. The most striking part of Grice's position, however, is his contention that the legitimacy of such evaluations rests ultimately on an argument for absolute value. (shrink)

Theological anthropology in Islam, philosophy of Islamic education and aspects of success.

Vol. 7, n. 2, December 2023 (special issue).

The following analysis has been undertaken mainly for the purpose of presenting a sample of a method which, as the writer holds, would, if widely and consistently applied, tend considerably to reduce the number and the significance of epistemological problems. The presuppositions characteristic of this method might be summarized in these five statements: 1)You cannot make discoveries by changing the meaning of terms.2)There is wisdom in common sense since it represents the accumulated experience of the race.3)It cannot be impossible to (...) work out common sense into a consistent terminology.4)It is when we lack the patience to do this that epistemological problems seem to arise.5)But when such a terminology is worked out, it will prove rather disappointing since it will just express, in a somewhat clarified form, what all the world has always been aware of. (shrink)

In his biography of Isaac Newton, which forms the most recent production in this flourishing genre, Niccolò Guicciardini states as his first point of departure that Newton's work arose not from ‘attempts to answer questions that came to him spontaneously, but [from addressing] those posed by his contemporaries’. Right he is to communicate to the larger audience for which he is writing this principal fruit of by now almost a century of professional history-of-science writing – a deep-seated awareness that every (...) scientific view or finding, even if looking timeless in retrospect, has emerged from some given historical context that shows us where the scientist in question started, and that helps explain how, and in what direction, they managed to venture beyond the original context. Indeed, the same truth applies to every genuine – that is, in some way innovative and also worthwhile – contribution to scholarship. And so it is, therefore, with the three books here under review, which I intend to examine with the following leading question in mind: what in each of them is new and what, in what turns out to be new indeed, has been worth learning? (shrink)

British accounts of medical ethics concentrate on confidentiality to the exclusion of wider questions of privacy. This paper argues for consideration of privacy within medical ethics, and illustrates through the television series `Hospital', what may go awry when this wider concept is forgotten.

ḥeleḳ 1. Hadrakhah le-shalom bayit : sefer hadrakhah meforaṭ be-ʻinyene shidukhim ṿe-shelom bayit be-niśuʼin ʻa. p. maʼamre Ḥazal -- ḥeleḳ 2. Hadrakhah le-ṭaharat ha-bayit : ʻiḳre ha-halakhot ha-ḥiyuniyot : ʻa. p. pisḳe maran ha-Shu. ʻa. ṿeha-Rema uve-tsiruf hakhraʻot aḥarone zemanenu.

Historian James H. Jones published the first edition of Bad Blood, the definitive history of the Tuskegee Syphilis Experiment, in 1981. Its clear-eyed examination of that research and its implications remains a bioethics classic, and the 30-year anniversary of its publication served as the impetus for the reexamination of research ethics that this symposium presents. Recent revelations about the United States Public Health Service study that infected mental patients and prisoners in Guatemala with syphilis in the late 1940s in order (...) to determine the efficacy of treatment represent only one of the many attestations to the persistence of ongoing, critical, and underaddressed issues in research ethics that Bad Blood first explored. Those issues include, but are not limited to: the complex and contested matters of the value of a given research question, the validity of the clinical trial designed to address it, and the priorities of science. (shrink)

A chief aim of this paper is to provide common ground for discussion of outstanding issues between defenders of classical logic and contemporary advocates of intuitionistic logic. In this spirit, I draw upon (and reconstruct) here the relationship between dialogue and evidence as emphasized in German constructivist authors. My approach depends upon developments in the methodology of empirical linguistics. As a preliminary to saying how one might decide between these two versions of logic (this issue is most closely approached in (...) Section V. discussing the constructivist approach), it is well worth the effort to look closely at how logic is (or might be) learned and at questions concerning logic in translation, i.e., the question of how we might detect the variety of logic actually employed in a given speech community. (shrink)

On the political and social views of Naṣīr al-Dīn Muḥammad ibn Muḥammad Ṭūsī, 1201-1274.

Cultural boundaries in Islam based on Hadith (Islamic traditions).

Ṣadr al-Dīn Shīrāzī, Muḥammad ibn Ibrāhīm, -1641--Criticism and interpretation. ; Islamic philosophy.

H. Tristram Engelhardt, Jr.; Medicine, Philosophy, and Theology: Christian Bioethics Reconsidered, Christian bioethics: Non-Ecumenical Studies in Medical Morali.

On the rights of husband and wife according to Islamic teachings.