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The article is devoted to the practical aspect related to the development of methodological culture of the future teachers specialised in Choreographic Art. The purpose of the article is determined by the possibility of resolving the contradiction between the need to overcome the "gap" between awareness of the importance of methodological culture of teachers to reach the top of pedagogical activity and the lack of theoretical and methodological resources for methodologization of continuous pedagogical education. The purpose of the study was to develop an experimental program enabling the development of methodological culture of future teachers-choreographers in higher education institutions and to confirm the effectiveness of its implementation in the educational process of a teacher training university. The use of theoretical (analysis of scientific, methodological, psychological and pedagogical sources) and practical (modelling, observation, analysis of students’ creative products) methods allowed us to outline the terminological and conceptual coordinates of the phenomenon under study and to present the results of the experimental work in terms of its practical application. The methodological culture of future teachers-choreographers is defined as a construct which includes knowledge in the field of pedagogical methodology; mastery of methods, tools and functionality of scientific knowledge; reflective mental activity within the coordinates of pedagogical reflection; skills to critically analyse pedagogical phenomena; a set of interiorised profession-related pedagogical, worldview-oriented and universal values which determine the development of profession-related consciousness; philosophical perspective of teaching. An experimental program (stages of work with students, teaching aids, forms of organisation) aimed at the development of methodological culture of future teachers-choreographers has been developed. The results of the implementation of the experimental program aimed at the development of methodological culture of the bachelor-course (first education level) students specialised in 014 Secondary Education (Choreography) have been highlighted.

Objective: The treatment of acetabular defects is one of the most difficult challenges of revision of total hip arthroplasty (RTHA), and tantalum is regarded as a promising bone substitute material. This study aims to investigate the effectiveness of 3D printed acetabular augment used in RTHA for the treatment of acetabular bone defect. Methods: A retrospective analysis of the clinical data of seven patients who had undergone RTHA was carried out using 3D printed acetabular augment from January 2017 to December 2018. The CT data of the patients were exported to Mimics 21.0 software (Materialise, Leuven, Belgium), and the acetabular bone defect augment were designed, printed and then implanted during operation. The postoperative Harris score, visual analogue scale (VAS) score and prosthesis position were observed to evaluate the clinical outcome. A I‐test was used for preoperative and postoperative comparison of the paired‐design dataset. Results: A firm attachment of the bone augment to the acetabulum during operation without any complications was found during the follow‐up time 2.8–4.3 years. The VAS score of all patients was found 6.9 ± 1.4 before operation and was 0.7 ± 0.7 at the last follow‐up (P ≤ 0.001), and the Harris hip scores, were 31.9 ± 10.3 and 73.3 ± 12.8 before operation, and at the last follow‐up (P ≤ 0.001), respectively. Moreover, no loosening sign between the bone defect augment and the acetabulum was observed during the entire implantation period. Conclusion: 3D printed acetabular augment is effective in reconstructing the acetabulum following an acetabular bone defect revision, which enhances the hip joint function and eventually makes a satisfactory stable prosthetic. [ABSTRACT FROM AUTHOR]

The core saturation of current transformers is one of the key obstructions in the development of highly reliable protective approaches and devices of power systems. A novel structure current transformer with shielding coils is introduced and analyzed in this paper. The coils are enwound outside the measurement winding of the current transformer, and each couple of coils are located at the opposite position relative to the diameter of the core, and connected in opposed-polarity. With the opposed-polarity connecting coils the magnetic field in the core produced by its adjacent phase current in a three-phase system can be shielded, so that the core saturation can be avoided. However, the coils do not influence the main magnetic flux that is caused only by the same phase current. Index Terms--Current transformer, electromagnetic shielding, nonlinear, saturation.

We propose a tightly focused hollow beam to trap cold molecules by using a metasurface grating, which has a hybrid phase with focusing and completely destructive interference functions. The intensity distributions of the hollow beam in free space concerning different structural parameters of the grating are theoretically studied in detail. The influences of both the discrete and continuous phases of the grating on the intensity distribution of the modulated optical field are compared. Our theoretical study shows that such a blue-detuned beam can provide a deep potential to trap cold molecules with a low photon scattering rate and a long trap lifetime. Our studies suggest that the metasurface-based optical chip is applicable to trap molecules and can be an ideal platform for building a robust quantum laboratory. [ABSTRACT FROM AUTHOR]

Abstract We propose a simple, controllable and highly efficient all-optical guide for a cw cold molecular beam in a blue-detuned parallel hollow beam over a long distance of ∼ 1 m. The hollow beam is generated by a beam shaper composed of a nonlinear ZnSe crystal. We demonstrate theoretically our optical molecular-beam guide and study its dynamic process by using Monte Carlo simulations. Our results show that the guiding efficiency can be easily controlled by adjusting the light intensity, and an ultracold collimated molecular beam with a transverse mean velocity of a few meters per second (the corresponding temperature is 13.67 mK) can be obtained. This guiding scheme has potential applications in molecule optics. [ABSTRACT FROM AUTHOR]