In this text are shown the chosen specific manifestations of rhetoric used by NCN experts in the evaluation of grant applications. The subject of analysis are the phrases and expressions contained in the opinions of requests in competitions FUGA (national competitions for internships after obtaining a doctoral degree, postdoc position), which are characterized by ambiguity and commonness. Makes it difficult to incorporate them in re-applying for the grant. Moreover, some of them express patronize attitudes towards potential applicants and their advisors. As an example one could present an expression: „as for pedagogue she has a good achievements”.
In my paper, I analyse passion in the context of lifelong human development. The main concern is whether passion has to be one and steady, or whether it is possible to have various passions in life, or even many different passions at the same time? To answer my question, I refer myself to the psychology of human development and the psychology of interests, as well as to Robert J. Vallerand’s dualistic model of passion.
My article is a synthetic recognition of macro-Polish governments’ evolution over 25 years of political transformation. It is presented from the perspective of education for democracy, in a democracy and not about democracy. I explain, how it is possible, that the Poles after they got rid of monistic doctrine of the totalitarian state, are subjected to hidden process of democratization of education and the school system. I analyze public education ,mechanisms and structures for its management in a way that counteracts democratic change. The school is subjected to a mechanism of political gamemakers. It becomes an institution which is painfully ineffective and without its face. This institution devastates traditions and allows intellectual regression. There are threats to educational reforms which lie not only in the sociopolitical mechanisms, but also and perhaps primarily within the education system, which has not created procedures to eliminate Pharisees of innovation from it. Polish educational system after 25 years of transformation is not only partially reprivatized but highly bureaucratic and fully involved in political parties.
The article considers the main trends of development of the Russian system of teacher education in the 21st century, translated documents on the basis of which there were changes in the education system.
The fact that postmodern pedagogy strongly encourages researchers to get involved in the process of understanding, analyzing and creating meanings is surely one of its virtues. In this context, the works of the Elderly Gentlemen's Cabaret appear to be quite an extraordinary phenomenon. They allow us to rediscover the somewhat forgotten ways of perceiving culture as a source of understanding, helping us live our lives more consciously. A discrete theatre pedagogy, allowing us to make ourselves more familiar with the works of Przybora and Wasowski, is a great material for awakening a personal interest, as well as an inspiration and a working method in sensitive education.
The aim of the article is firstly to illustrate various meanings of the category of ‘passion’ which function in the public educational discourse (as a key idea of initiative, educational undergoing). Secondly, it depicts an attempt to systematise different designatum of ‘passion’ concept, and in consequence to indicate philosophical concepts of passion and psychological concepts elaborated on the basis of systematically conducted empirical researches on human’s passion mechanisms (i.a the dualistic model of passion according to R.J. Vallerand; romantic concept of passion).
Changes of university should not be a result of administrators’ and university managers’ decisions (as a top-down approach), but of initiatives caused by academic community. These engaged initiatives may take a different forms – associations, foundations, membership in academic committees, as well as different kinds of new social movements. An example of such a social movement are Obywatele Nauki (the Citizens of Science). Its members are young (usually post-docs), as well as more experienced scholars, who – despite the fact of achieving scientific and academic success – are working for the common good and the good of the university seen as an important social institution. Thus the Citizens of Science propose and encourage other scholars to seek constructive and parallel solutions, that, on the one hand, will respect the cultural, social, economic roots building the identity of the university, and, on the other hand, that will have will to use the vitality of young academic. There are three main possibilities of interpretation of the activity of the movement. First of all, these are the modern conceptions of social movements (Gorlach, Mooney 2008; Krzeminski 2013; Sztompka 2010; Żuk 2001; Touraine 2010, 2011, 2013), analyzing measures in the dimension of macro, meso and microstructure. Another important interpretation path is a reference to the history of Social Solidarity Movement (Touraine 2010, 2011, 2013; Ost 2007; Staniszkis 2010; Koczanowicz 2009). The third possibility of interpretive is theory of performative democracy (Matynia 2008; Austin 1993; Searl 1980, 1987), which is a particular dimension of public life, what creates an alternative to the undemocratic, unjust practices of power.
The presented material is a concise report of the research on the ‘condition’ of initial teacher education provided at universities in Poland in accordance with ‘new’ Ministry standards of 17 January 2012. In the analysis of data collected from 30 universities in May 2015, we focused on models of the organisation of this part of teaching at universities, the ways of constructing the professional curricula, the role and place of practice in the learning processes and the strategy of assessment of the preparation for teaching. Our research result is not quite optimistic. Under the ‘new label’ of standards we still have quasi-traditional approach to initial teacher education. In acquiring the new professional competencies students do not get real support from their academic and school partners. They are not very interesting in building opportunities for transforming learning aiming at transforming teaching
The article discusses the position of young researchers within the field of Polish pedagogy. The article is based on a simple survey. The main objective of the texts is to analyze fundamental problems that the group in question is faced with. The key questions referring to young Polish researchers of pedagogy cover three areas: day-to-day reality of young researchers; research funding system; prospects and visions of changes of the current situation. Also, these three areas govern the structure of the article. In the final part, I attempt to present the main conclusions of the conducted analyses.
Article presents results of research concerning condition of school pedagogy as a subdiscipline. Study was performed by Zespół Zadaniowy Pedagogiki szkolnej under the auspices of PAN. The condition of subdiscipline was described as: presence of formal entities of school pedagogy in universities, academic and didactic activity on subject school pedagogy. Quantitative and qualitative description underlies to preliminary findings concerning condition of school pedagogy.
Abstract An autonomous mobile robot is a robot which can move and act autonomously without the help of human assistance. Navigation problem of mobile robot in unknown environment is an interesting research area. This is a problem of deducing a path for the robot from its initial position to a given goal position without collision with the obstacles. Different methods such as fuzzy logic, neural networks etc. are used to find collision free path for mobile robot. This paper examines behavior of path planning of mobile robot using three activation functions of wavelet neural network i.e. Mexican Hat, Gaussian and Morlet wavelet functions by MATLAB. The simulation result shows that WNN has faster learning speed with respect to traditional artificial neural network.
Abstract A hyperjerk system is a dynamical system, which is modelled by an nth order ordinary differential equation with n ⩾ 4 describing the time evolution of a single scalar variable. Equivalently, using a chain of integrators, a hyperjerk system can be modelled as a system of n first order ordinary differential equations with n ⩾ 4. In this research work, a 4-D novel hyperchaotic hyperjerk system has been proposed, and its qualitative properties have been detailed. The Lyapunov exponents of the novel hyperjerk system are obtained as L1 = 0.1448, L2 = 0.0328, L3 = 0 and L4 = −1.1294. The Kaplan-Yorke dimension of the novel hyperjerk system is obtained as DKY= 3.1573. Next, an adaptive backstepping controller is designed to stabilize the novel hyperjerk chaotic system with three unknown parameters. Moreover, an adaptive backstepping controller is designed to achieve global hyperchaos synchronization of the identical novel hyperjerk systems with three unknown parameters. Finally, an electronic circuit realization of the novel jerk chaotic system using SPICE is presented in detail to confirm the feasibility of the theoretical hyperjerk model.
Abstract This paper studies the H∞ disturbance attenuation problem for index one descriptor systems using the theory of differential games. To solve this disturbance attenuation problem the problem is converted into a reduced ordinary zero-sum game. Within a linear quadratic setting the problem is solved for feedback information structure.
Abstract In this paper, the method of periodically pinning intermittent control is introduced to solve the problem of outer synchronization between two complex networks. Based on the Lyapunov stability theory, differential inequality method and adaptive technique, some simple synchronous criteria have been derived analytically. At last, both the theoretical and numerical analysis illustrate the effectiveness of the proposed control methodology. This method not only reduces the conservatism of control gain but also saves the cost of production.These advantages make this method having a large application scope in the real production process.
Abstract The conditions for positivity and stability of a class of fractional nonlinear continuous-time systems are established. It is assumed that the nonlinear vector function is continuous, satisfies the Lipschitz condition and the linear part is described by a Metzler matrix. The stability conditions are established by the use of an extension of the Lyapunov method to fractional positive nonlinear systems.
Abstract First, this paper announces a seven-term novel 3-D conservative chaotic system with four quadratic nonlinearities. The conservative chaotic systems are characterized by the important property that they are volume conserving. The phase portraits of the novel conservative chaotic system are displayed and the mathematical properties are discussed. An important property of the proposed novel chaotic system is that it has no equilibrium point. Hence, it displays hidden chaotic attractors. The Lyapunov exponents of the novel conservative chaotic system are obtained as L1 = 0.0395,L2 = 0 and L3 = −0.0395. The Kaplan-Yorke dimension of the novel conservative chaotic system is DKY =3. Next, an adaptive controller is designed to globally stabilize the novel conservative chaotic system with unknown parameters. Moreover, an adaptive controller is also designed to achieve global chaos synchronization of the identical conservative chaotic systems with unknown parameters. MATLAB simulations have been depicted to illustrate the phase portraits of the novel conservative chaotic system and also the adaptive control results.
Abstract A new formulation of the minimum energy control problem for the positive 2D continuous-discrete linear systems with bounded inputs is proposed. Necessary and sufficient conditions for the reachability of the systems are established. Conditions for the existence of the solution to the minimum energy control problem and a procedure for computation of an input minimizing the given performance index are given. Effectiveness of the procedure is demonstrated on numerical example.
At thermal junctions of aluminium alloy castings and at points where risering proves to be difficult there appear internal or external shrinkages, which are both functionally and aesthetically inadmissible. Applying the Probat Fluss Mikro 100 agent, which is based on nano-oxides of aluminium, results in the appearance of a large amount of fine microscopic pores, which compensate for the shrinking of metal. Experimental tests with gravity die casting of AlSi8Cu3 and AlSi10Mg alloys have confirmed that the effect of the agent can be of advantage in foundry practice, leading to the production of castings without local concentrations of defects and without the appearance of shrinkages and macroscopic gas pores. Also, beneficial effect on the mechanical properties of the metal has been observed.
Cast Hadfield steel is characterised by high abrasion resistance, provided, however, that it is exposed to the effect of dynamic loads. During abrasion without loading, e.g. under the impact of loose sand jet, its wear resistance drops very drastically. To increase the abrasion resistance of this alloy under the conditions where no pressure is acting, primary vanadium carbides are formed in the metallurgical process, to obtain a composite structure after the melt solidification. The primary, very hard, carbides uniformly distributed in the austenitic matrix are reported to double the wear resistance of samples subjected to the effect of a silicon carbide-water mixture.
The formation of oxide film on the surface of aluminium melts, i.e. bifilms, are known to be detrimental when they are incorporated into the cast part. These defects causes premature fractures under stress, or aid porosity formation. In this work, Al-12 Si alloy was used to cast a step mould under two conditions: as-received and degassed. In addition, 10 ppi filters were used in the mould in order to prevent bifilm intrusion into the cast part. Reduced pressure test samples were collected for bifilm index measurements. Samples were machined into standard bars for tensile testing. It was found that there was a good agreement with the bifilm index and mechanical properties.
The article shows the influence of environment requirements on changes in different foundry moulding sands technologies such as cold box, self-hardening moulding sands and green sands. The aim of the article is to show the possibility of using the biodegradable materials as binders (or parts of binders’ compositions) for foundry moulding and core sands. The authors concentrated on the possibility of preparing new binders consisting of typical synthetic resins - commonly used in foundry practice - and biodegradable materials. According to own research it is presumed that using biodegradable materials as a part of new binders’ compositions may cause not only lower toxicity and better ability to reclaim, but may also accelerate the biodegradation rate of used binders. What’s more, using some kinds of biodegradable materials may improve flexibility of moulding sands with polymeric binder. The conducted research was introductory and took into account bending strength and thermal properties of furan moulding sands with biodegradable material (PCL). The research proved that new biodegradable additive did not decrease the tested properties.
Paper presents the assessment of impact of heat treatment on durability in low-cycle fatigue conditions (under constant load) in castings made using post-production scrap of MAR-247 and IN-713C superalloys. Castings were obtained using modification and filtration methods. Additionally, casting made of MAR-247 were subjected to heat treatment consisting of solution treatment and subsequent aging. During low-cycle fatigue test the cyclic creep process were observed. It was demonstrated that the fine-grained samples have significantly higher durability in test conditions and , at the same time, lower values of plastic deformation to rupture Δϵpl. It has been also proven that durability of fine-grained MAR-247 samples can be further raised by about 60% using aforementioned heat treatment.