On Authenticity and Popular Culture

In the review the author analyses Ewa Mazierska’s book Polish Popular Music on Screen (2020), which investigates the mutually entangled histories of Polish politics, cinema, TV, and music. Although it focuses on the Polish context, the general and theoretical observations that emerge from Mazierska’s analysis relate also to the broader former socialist Europe. Departing from Mazierska’s work, the author tackles the question of “(in)authenticity” in relation to popular culture. The word “authenticity” often appears in the text to express the critics’ opinions of cultural products, but it is not clearly defined. The review of Mazierska’s research starts with a preliminary analysis of the concept, which enables a transversal discussion of the data presented in the text. Then the author draws some conclusions about the current state of research on Eastern European culture by highlighting the limits and the potentials of the field.

PRELIMINARY ANALYSIS OF THE MODERNIZATION OF METAL-CUTTING MACHINES

The method of modernization and analysis of the choice of the electric motor are shown. It has been established that it is expedient to carry out modernization based on a feasibility study in several stages with the development and approval of technical documentation at each stage

Newton’s Third Law in the Framework of Special Relativity for Charged Bodies Part 2: Preliminary Analysis of a Nano Relativistic Motor

(1) Background: In a recent paper discussing Newton’s third law in the framework of special relativity for charged bodies, it was suggested that one can construct a practical relativistic motor provided high enough charge and current densities are available. As on the macroscopic scale charge density is limited by the phenomena of dielectric breakdown, it was suggested to take advantage of the high charge densities which are available on the microscopic scale. (2) Methods: We use standard physical theories such as Maxwell electrodynamics and quantum mechanics, supplemented by tools from vector analysis and numerics. (3) Results: We show that a hydrogen atom either in the ground state or excited state will not produce a relativistic engine effect, but by breaking the symmetry or putting the electron in a wave packet state may produce relativistic motor effect. (4) Conclusions: A highly localized wave packet will produce a strong relativistic motor effect. The preliminary analysis of the current paper suggests new promising directions of research both theoretical and experimental.

Pengaruh Virtual Learning Pembelajaran Jarah Jauh Guru Pendidikan Agama Islam dan Partisipasi Orang Tua terhadap Hasil Belajar PAI

This study aims to determine the effect of virtual learning on Islamic Religious Education learning outcomes, the effect of parental participation on Islamic Religious Education learning outcomes, as well as the effect of virtual learning and parental participation on PAI learning outcomes at SMPN 4 Karanganyar academic year 2020/2021. The hypothesis proposed is that virtual learning and parental participation have a significant effect on PAI learning outcomes for class VIII SMPN 4 Karanganyar academic year 2020/2021. This research is quantitative descriptive with data collection methods are questionnaires, observations, interviews and documentation. Subjects were taken by class VIII SMPN 4 Karanganyar with a population of 360 and a sample of 100 students. Data analysis used preliminary analysis, hypothesis testing and further analysis. The results showed that the effect of virtual learning on PAI learning outcomes was in good category, the influence of parental participation on PAI learning outcomes was in good criteria, and the influence of virtual learning and parental participation had a significant effect on PAI learning outcomes for class VIII students of SMPN 4 Karanganyar academix year 2020/2021 which is in the good category.

Study of Clinical Features and Diagnosis Pattern of Duchene Muscular Dystrophy in Southern India

Background Duchene muscular dystrophy (DMD) is an X-linked progressive muscle disorder that is characterized by proximal muscle weakness followed by a premature death in young boys. There is a low index of reports on diagnosis ratio and clinical features in Southern India. Objective The present study aimed to conduct an observational survey on preliminary analysis, family history, associated complaints, and diagnosis ratio of DMD in southern regions of India. Materials and Methods A systematic observation and survey were conducted on clinically confirmed DMD patients registered between 2019 and 2021 through the questionnaire. The questionnaire and pattern of study were identified by exploring published and unpublished studies available from electronic databases and critical assessment criteria considered by physicians. Preliminary analysis such as onset criteria, motor difficulties, milestone delay; family history and consanguinity analysis; chief complaints (ambulatory status, lordosis, respiratory, and cardiac outcomes), associated complaints such as enlarged tongue, oral hygiene, behavioral problems; and other similar parameters were studied. An assessment of the diagnosis rate and pattern was performed. Statistical analysis The data were reviewed and interpreted through statistical methods mean ± standard deviation represented as a percentage. Results In total, 400 DMD patients were included and 250 participated in the study. The onset age group was 2 to 5 years in 37% of the population. Milestone delay was seen in 86%; consanguinity marriage of parents was reported in 39%. Frequent falls were reported in 62% in 5 to 8 years old group. Wheelchair status was reported in 65% in 9 to 12 years old. Cervical and lumbar lordoses were seen in 57 and 69%, respectively, in above 13 years old. Respiratory and cardiac complications were 88 and 78% reported in above 13 years old, respectively. Other major associated complaints such as enlarged tongue were reported in 79%. Fifty-one percent underwent genetic diagnosis and 79% of the population underwent serum creatine phosphokinase (CPK) analysis for the confirmation of DMD. Conclusion In this study population of South India, milestone delay was a major observation. Although there was a slight margin, family history shows “no blood relation among parents” in the majority of the study population. Chief complaints were predominantly severe above 13-year age group population. Serum CPK was the first choice for the first investigation, which is followed by a genetic diagnosis.

Tianwen-1 Mars entry vehicle trajectory and atmosphere reconstruction preliminary analysis

The Tianwen-1 Mars entry vehicle successfully landed on the surface of Mars in southern Utopia Planitia on May 15, 2021, at 7:18 (UTC+8). To acquire valuable Martian flight data, a scientific instrumentation package consisting of a flush air data system and a multilayer temperature-sensing system was installed aboard the entry vehicle. A combined approach was applied in the entry, descent, and landing trajectory reconstruction using all available data obtained by the inertial measurement unit and the flush air data system. An aerodynamic database covering the entire flight regime was generated using computational fluid dynamics methods to assist in the reconstruction process. A preliminary analysis of the trajectory reconstruction result, along with the atmosphere reconstruction and aerodynamic performance, was conducted. The results show that the trajectory agrees closely with the nominal trajectory and the wind-relative attitude. Suspected wind occurred at the end of the trajectory.