124 research outputs found
Stanowisko G.W.F. Hegla wobec teoriopoznawczego dualizmu w Pewności zmysłowej
Full text linkDer Artikel widmet sich der Auslegung des Kapitels Die sinnliche Gewißheit oder das Diese und das Meinen aus Phänomenologie des Geistes von G. W. F. Hegel. Das Ziel ist der Nachweis, das der Dualismus im Subjekt-Objekt-Verhältnis laut Hegel selbst auf dem Niveau des Wissens über sinnliche Individuen problematisch und unberechtigt ist. Eine solche Lesart stimmt meiner Ansicht nach mit den metaphilosophischen Absichten der gesamten Phänomenologie des Geistes überein. Sie beschränkt sich nicht allein darauf, die Unmöglichkeit des unbegrifflichen empirischen Wissens vorzuführen, sondern bezieht sich vor allem auf die Natur der Erkenntnisrelation auf dem elementarsten Erkenntnisniveau. Hegel zeigt, dass jedes Problem, dem die sinnliche Gewissheit begegnet, durch eine richtige Umformung des Subjekt-Objekt-Verhältnisses gelöst werden kann. In den Schlussfolgerungen stellt er fest, dass ein qualitativer Unterschied zwischen Subjekt und Objekt unbegründet ist, und dass es folglich keinen Grund dafür gibt, die Meinungen über die realen und völlig äusseren sinnlichen Objekte zu akzeptieren. Im Endergebnis lehnt er naiven Realismus und die Beschränkungen des Kantischen Phänomenalismus ab.Interpreted in this paper is Sense-Certainty: Or the ‘This’ and ‘Meaning’, a chapter from G.W.F. Hegel’s Phenomenology of Spirit. The author seeks to prove that according to Hegel, the dualistic nature of the subject-object relation is problematic and implausible even with knowledge about sensual beings. The author argues that such interpretation is consistent with the metaphilosophical intentions of the whole Phenomenology of Spirit. It is not confined solely to demonstrating the impossibility of non-conceptual empirical knowledge as it relates above all to the nature of epistemic relation on its most fundamental level. Hegel indicated that every problem encountered by sense certainty, can be solved by proper reformulation of the subject-object relation. The author concludes that the qualitative distinction between subject and object is unjustified, and hence there is no reason to accept the notion of real and entirely external sensual objects. Consequently, he rejects naïve realism and constraints of kantian phenomenalism.Artykuł stanowi interpretację rozdziału Pewność zmysłowa, czyli To Oto i Mniemanie z Fenomenologii ducha G.W.F. Hegla. Celem jest wykazanie, że według Hegla, nawet na poziomie wiedzy o zmysłowych indywiduach, dualizm w relacji podmiotu i przedmiotu jest problematyczny i nieuzasadniony. Takie odczytanie jest, w moim przekonaniu, zgodne z metafilozoficznymi intencjami stojącymi za całością Fenomenologii ducha. Nie ogranicza się ono do demonstracji niemożliwości niepojęciowej wiedzy empirycznej, lecz odnosi się przede wszystkim do natury relacji poznawczej na najbardziej podstawowym poziomie poznania. Hegel pokazuje, że każdy problem, który napotyka pewność zmysłowa, może być rozwiązany poprzez właściwe przeformułowanie relacji podmiotu i przedmiotu. We wnioskach stwierdza, że jakościowa różnica między podmiotem i przedmiotem jest bezpodstawna, i co za tym idzie, nie ma powodu, aby akceptować mniemania o realnych i całkowicie zewnętrznych zmysłowych przedmiotach. W rezultacie, odrzuca naiwny realizm oraz ograniczenia kantowskiego fenomenalizmu
OPTIMIZATION OF BUSINESS PROCESSES IN AN ENTERPRISE IN AN UNSTABLE BUSINESS ENVIRONMENT
Full text linkExperimental and numerical optimization of coal breakage performance parameters through abrasive gas jet
No full textAn Optimized Control Scheme for Reducing Conduction and Switching Losses in Dual Active Bridge Converters
Full text linkAn optimized switching control strategy to reduce the conduction and switching losses of the dual active bridge converter is presented in this paper. The control strategy can simultaneously reduce the root mean square value and average absolute value of the leakage inductor current, which are closely relevant to the conduction and switching losses of the semiconductor devices and high-frequency transformers. The optimization is conducted by regulating two manipulated variables on the basis of achieving zero-voltage switching for all switches in a wide voltage range as well as effectively reducing the power losses. An experimental prototype was implemented to validate the theoretical analysis and the feasibility of the proposed method. The experimental results revealed that the converter power losses can effectively be reduced and the overall system efficiency can be improved using the proposed control strategy
A Flexible Control Scheme for Single-Stage DAB AC/DC Converters
Full text linkA flexible control method for a single-stage dual-active-bridge (DAB) based ac-dc converter is proposed. In order to avoid look-up tables and extend the achievable transfer power range, the proposed control scheme utilizes light and heavy load operation modes and adopt the suitable mode depending on the output power level. Meanwhile, unity power factor and zero-voltage switching (ZVS) can be achieved during one full-range mains cycle. Simulation results and experimental results are presented to validate the proposed method and theoretical analysis
An Enhanced Generalized Average Modeling of Dual Active Bridge Converters
Full text linkAn enhanced generalized average modeling (GAM) method for a dual active bridge (DAB) converter is presented in this paper. Firstly, the conventional lossless model is introduced and it is shown that this model might cause a non-neglectable steady state error. In order to improve the modeling accuracy, a wide range of loss sources are involved in the proposed enhanced GAM model, such as conduction losses and core losses. On this basis, this paper further proves that the 3 rd-order harmonic component of the leakage inductance current should be considered to reduce steady state errors in light load conditions, while others might only consider the 1 st-order harmonic in the existing DAB models. Also, a universal form of the modeling equation to include up to any h th-order harmonic component is derived. Finally, comparative simulation and experimental results are presented to validate the feasibility of the analysis. </p
An Optimized Control Scheme to Reduce the Backflow Power and Peak Current in Dual Active Bridge Converters
Full text linkAn optimized switching control scheme to reduce the backflow power and the peak current of the dual active bridge converter is presented in this paper. Based on a triple-phase-shift modulation, the control scheme consists of operating the switching devices with three optimized control variables on the basis of achieving a decreased backflow power and peak current. This can enhance the converter efficiency and reduce the current stress on the switching devices. The optimal values of these three manipulated variables are obtained through analysis of different operation modes. Besides, the power transfer ranges and soft-switching constraints are also explained in detail. Experimental results are presented to validate the feasibility of the proposed method
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