1,164 research outputs found
Pedagogical ideas of S.T. Shatsky
No full textU radu se prate osnovne pedagoške ideje poznatog ruskog i sovjetskog društvenog radnika i pedagoga S. T. Šackog. Članak polazi od osnovnih informacija njegove biografije, neprekidno povezane sa radom u prosveti i razmišljanjima o vaspitanju, prikazujući ih kao podlogu razvoja njegovih pedagoških ideja. Dalji tekst kratko iznosi njegove osnovne ideje u tematskim celinama o kritici škole, cilju vaspitanja, škole budućnosti, predškolskom i vanškolskom vaspitanju, didaktičkim shvatanjima, položaju deteta u vaspitnom procesu, radu učitelja i mestu škole u društvenoj sredini. Rad pokušava da dovede u vezu shvatanja Šackog sa savremenim pogledima na iste probleme. U tekstu se, takođe, može uočiti nekoliko tema za razmišljanje koje su naročito izdvojene u zaključnom delu članka: trajnost pitanja o vaspitanju, odnosno pedagoških problema, mogućnosti ostvarivanja ideja o promeni škole kao institucije vaspitnog sistema, odnos rada u prosveti i društvenog angažovanja.The author discusses the pedagogical ides of a well known Russian and Soviet social worker and pedagogue S.T. Shatsky. The report starts with the basic information from his biography, always in connection with his work in education and his contemplation on education, showing them as a background for the development of his pedagogical ideas. It proceeds by' an account on hid ideas in themes on criticism of school, the objective of education of the school of future, pre school and out of school education, didactic ideas, the position of child in the process of education, the work of the teacher and the place of school in the social milieu. The author attempts to bring together Shatsky's ideas and the modern attitudes to the same problems. The text also offers a number of topics for discussion, especially dealt with in the closing part: the duration of the issue of education, i.e. pedagogical problems, the possibility' of realization of the ideas on the change of school as a institution of education system, the relation of work in education and social engagement
Author Correction: New perspectives on Neanderthal dispersal and turnover from Stajnia Cave (Poland)
Full text linkThe Author contributions section now reads:“W.N., A.N. and S.T. designed research; A.P., M.H., W.N., S.B., M.U., A.M., H.F., M.D.B., P.S., K.S., M.Ż., A.W., A.N. and S.T. performed research; A.P., M.H., W.N., S.B., M.U., A.M., H.F., M.D.B., P.S., K.S., M.Ż., A.W., A.N. and S.T. analysed data; A.P., M.H., S.T., W.N. and S.B. wrote the paper with the collaboration of all the co-authors.
Author Correction:A 41,500 year-old decorated ivory pendant from Stajnia Cave (Poland)
No full textCorrection to: Scientific Reports https://doi.org/10.1038/s41598-021-01221-6, published online 25 November 2021The original version of this Article contained errors in the author list where Marjolein D. Bosch was omitted from the author list, and Mikołaj Urbanowski was incorrectly listed as an author of the original Article, and has subsequently been removed.The Author contributions section now reads:“S.T. W.N. and A.N. conceived the project; S.T., W.N., A.P., M.B., S.C., M.D., H.F., A.M., M.D. B., D.P., M.P.R., C.M.R., V.S-M., G.M.S., P.S., M.S., K.S., A.V., F.W., H.W., A.W., M.Z., S.B., A.N., J-J. H., performed research; S.T., A.P., W.N., M.B., M.D.B., S.C., M.D., H.F., A.M., D.P., M.P.R., C.M.R., V.S-M., G.M.S., P.S., M.S., K.S., A.V., F.W., H.W., A.W., M.Z., S.B., A.N., J-J. H. analysed all archaeological data; S.T. and A.P. wrote the paper with the collaboration of all the co-authors.”The original Article and its accompanying Supplementary Information file have been corrected
Lovecraft and Religion
No full textThe article was originally published as a chapter in S.T. Joshi’s book Lovecraft and a World in Transition: Collected Essays on H. P. Lovecraft (New York: Hippocampus Press 2014, pp. 187-195). The presented version was kindly provided to „Creatio Fantastica” by the Author without any copyright fee and translated into Polish by Magdalena Wąsowicz
Experimental research on the effects of surface screens on a mobile bed
No full textIn 2000 the Dutch government chose a new point of view for the Dutch rivers: “Room for the River”. This viewpoint is the basis for a new approach of high water protection in the Netherlands. Instead of strengthening and raising the dikes, solutions must be based on space and spatial quality. One of the suggested measures is the addition of secondary channels. The purpose of these channels is enlarging the conveyance area and the ecological role of the river. Maintaining the profile of these channels involves substantial financial consequences. Finding a sustainable solution for undesired erosion or sedimentation is the main focus of this study. The research question is stated as follows: “How can the undesired erosion or sedimentation in secondary channels be corrected with a temporary but sustainable solution in the form of surface screens?”. The main part of this study is an experimental study on the effects of surface screens on a mobile bed. The design of the physical experiments requires choices about the geometry of the flume. The experiments were carried out with a straight flume and with a dividing wall. Preparing the experiments requires information about the flume facility. The experiments have been carried out in the Environmental Fluid Mechanics Laboratory of DUT. The upstream boundary conditions are discharge and velocity distribution. The downstream boundary condition consisted of a fixed water level. The water level was kept constant along the natural slope of the surface. The experiments consist of taking velocity and bed level. The angle of attack and the penetration depth were chosen to be variable. The angle of attack was varied between 15 and 25 degrees. With these relatively small angles the screen acts as guidance for the flow, instead of an obstruction. The penetration depth was varied between 20% and 60% of the water column. The initial test run determined the optimal measurement duration and the initial equilibrium. Four representative cases have been described in detail, giving support to the general conclusions. The flow pattern changes under influence of the surface screen. The main flow direction is guided by the screen, introducing a transverse velocity at the surface. As flow continuity in the flume has to be maintained, the water near the bottom is forced to have a transverse velocity in opposite direction. Redistribution of the suspended transport and the bottom transport was induced. This generated locations were the actual transport did not meet the transport capacity, which gives rise to morphological changes. Next to the spiral motion the screen had an effect on the longitudinal flow velocities. The attacked side of the flume experiences a higher velocity, thereby having a higher transport capacity. This higher capacity gives rise to local erosion of the bed. At the unattacked side, sedimentation occurs, thereby rising the bed level. In the B-series of the experiment a dividing wall was added. The screen in front of the bifurcation gave rise to the same two processes, but the wall introduced an extra effect. The screen influenced the bifurcation relationship. The bed level adapted to the new conditions. The upstream effect of the bifurcation is explained by changes in water level topography, thereby influencing the backwater curve. In general the wall amplified the morphological development of the bed. Finally some suggestions have been made for the practical application of surface screens. In general the screens can be applied in a (secondary) channel or in front of a bifurcation. The use of a screen inside a channel has an advantage not to interfere with the navigation channel. The advantage of a screen in front of a bifurcation is influencing two channels simultaneously. One of the main disadvantages of the latter is the possibility of disturbing the delicate bifurcation relationship. When carefully implemented this effect can simultaneously be the main advantage of this screen layout, as the morphological response increases.Hydraulic EngineeringCivil Engineering and Geoscience
Stabilizing Control System of a Platform of a Buoy for Offshore Wind Assessment
No full textThe purpose of this project is to design a control system to stabilize a platform on a buoy. Stabilization of the platform on the buoy is needed for reliable measurements of wind speed and wind direction on sea using LiDAR (Light Detection And Ranging) modules. These modules use the reflection of particles in the air to measure the wind speed and wind direction. This report is a description of the design of a prototype for a buoy with a stabilized platform. The research contains a study on the behavior of a buoy on waves, a description of the choices made for the design, a description of the used test methods, the test results and some recommendations for improvements on the design, based on the test results. The platform is controlled by three linear actuators of adjustable length. The angle of tilt of the platformis measured with a gyroscope and is used for controlling the linear actuators. The platform is able to compensate an angle of tilt that is smaller than 38° . The reaction time on deviations that are smaller than 10° is less than 1.2 seconds. The reliability on the long term must be improved, through implementation of some recommendations. One of these recommendations is the use of a Kalman filter to prevent long term drift of sensor output by combining different kinds of sensors.Electrical EngineeringElectrical Engineering, Mathematics and Computer Scienc
The Platform and Overall Design of an Actively Stabilised, Manoeuvrable Buoy for Offshore Wind Assessment
No full textIt is estimated that in the EU, energy consumption will rise to 4,350 TWh in 2030. Offshore wind farms can provide a solution. The technical wind energy potential for offshore wind farms of the European waters is estimated to be 30,000 TWh annually. For feasibility studies, building and operating offshore wind farms weather assessments are needed. These assessments used to be performed by expensive static weather stations. Nowadays advanced buoys are also used. An example is the SEAWATCH Wind LiDaR buoy equipped with a ZephIR300 LiDaR, that performs wind estimations based on the back scatter of laser pulses. Buoys are financially much more attractive than static stations, however they still have two main disadvantages: first, measurements are influenced largely by the pitch and roll motions that are created by sea waves. Second, the buoys need to be moved manually. The goal of this project is to design a scaled prototype of the SEAWATCH Wind LiDaR buoy, equipped with an actively stabilised platform and autonomous position control. This thesis focuses on the design of the actively stabilised platform and overall design of the prototype. The platform is designed with two gyroscopes, which are used to measure the angle that needs to be compensated. The compensation for motion takes place through three linear electric actuators which are controlled with a microcontroller. The total buoy is designed to closely match the dimensions of the SEAWATCH Wind LiDaR buoy. After testing the design, it can be concluded that the built prototype can stabilise a maximum angle of 38 degrees within 3,2 s. When stabilised, the maximum deviation angle of the platform is 3,3 degrees. The overall design of the buoy closely matched the scaled dimensions of the SEAWATCH Wind LiDaR buoy. The design is waterproof, floats and is able to sail in desired directions. It is therefore determined that proof of principle for an actively stabilised platform on an offshore buoy is demonstrated. For further development it is recommended to have a larger budget in order to purchase faster actuators. Also the actuators must be able to resist a large amount of side stress to prevent breakage. It is also recommended to reduce the noise influences of the gyroscope and develop a more accurate test setup. Finally it is recommended to design both a self-sufficient power system and to add partial heave control to the platform control.Electrical EngineeringElectrical Engineering, Mathematics and Computer Scienc
Toward a Theology of the Imagination with S.T. Coleridge, C.S. Lewis, and J.R.R. Tolkien
No full textWhile many authors continue to use terms like Christian Imagination or Sacramental Imagination, few seek to define what the term imagination means. In this paper, the author presents his findings based on a close reading of S.T. Coleridge, C.S. Lewis, and J.R.R. Tolkien. Rather than relying either on the definition of imagination as the ability to hold images in one’s head, or the definition by which is meant creativity, this paper puts forward a synthesis of the positions of the three authors listed above. In the end, this paper concludes that the imagination is inherently connected to the divine act of Creation, which aids in clearing away the lenses of sin and familiarity
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