The Electromagnetic Field outside the Steadily Rotating Relativistic Uniform System

Using the method of retarded potentials, approximate formulae are obtained that describe the electromagnetic field outside the relativistic uniform system in the form of a charged sphere rotating at a constant speed. For the near, middle and far zones, the corresponding expressions are found for the scalar and vector potentials, as well as for the electric and magnetic fields. Then, these expressions are assessed for correspondence to the Laplace equations for potentials and fields. One of the purposes is to test the truth of the assumption that the scalar potential and the electric field depend neither on the value of the angular velocity of rotation of the sphere nor on the direction to the point where the field is measured. However, calculations show that potentials and fields increase as the observation point gets closer to the sphere’s equator and to the sphere’s surface, compared with the case for a stationary sphere. In this case, additions are proportional to the square of the angular velocity of rotation and the square of the sphere’s radius and inversely proportional to the square of the speed of light. The largest found relative increase in potentials and fields could reach the value of 4% for the rapidly rotating neutron star PSR J1614-2230, if the star were charged. For a proton, a similar increase in fields on its surface near the equator reaches 54%. Keywords: Electromagnetic field, Relativistic uniform system, Rotation.

Quranic motifs in the Kumyk religious literature

The object of this research is the Kumyk medieval literature, dominated by thee ideas of enlightenment and religious unity. As a result of adoption of Islam by the peoples of Dagestan, including Kumyks, their written literature grounded on Quran, acquires a pronounced Muslim character. The Kumyk religious literature existed in the forms of sermons, cogitations, philosophizing and homilies, commonly known as “turki”. The concept of “turki”, which encompasses numerous religious poems of various contents and forms, represents a uniform system of genres, namely religious poetry. It is determined that alongside consolidation of the position of Islam in Dagestan in the XVI century, the religious themes become increasingly popular in the literary works of Kumyk poets and theologians. The authors examine  the Quranic motifs in the Kumyk religious literature  on the example of the collection “Majmu ul-Manzumat al-Ajamiyya”. Eschatological motifs in the aforementioned work can be divided into two parts: edifying that provide moral and ethical instructions, and descriptive that depict perturbations that await people for non-compliance with such instructions.  

Assemblage technique in creating modern wooden sculptures

This article demonstrates the manifestation of assemblage technique in modern wooden sculpture. The author describes the essence of this method. Special attention is given to another novelty of avant-garde culture – organic art, according to the philosophy of which, the world is depicted as organic whole, the uniform system with its own laws. The pedagogical system of M. Matyushin allows demonstrating the natural bound of man and nature in the artworks. Based on the developed creative method, the author indicates that contemporary art may combine such avant-garde trends as organic art and assemblage. Another important methodology that is similar to assemblage technique, and simultaneously verges upon the practices of kinetic art, is the creation of sculptures with spinning elements. The synthesis of techniques and materials allows expanding the boundaries of art by introducing into inartistic materials. The fundamental idea of this approach is to enrich the context of existence of the artwork and its history. It is stated that wooden sculpture allows the artists to experiment. The ideas and plotlines of wooden sculptures embody the artistic diversity of decorative and applied arts.

The Effects of Institutional Measures: Geographical Indication in Mercosur and the EU

As agri-food markets become increasingly specialized, governments are provoked to provide these products legal support to protect their supply and trade sources. After several treaties, the Trade-Related Aspects of Intellectual Property Rights (TRIPS) Agreement was signed in 1995 as the broadest ever reached. The agreement allowed Geographical Indication (GI) of agri-food products to be targeted. The GIs of Mercosur and the European Union are very different in absolute and relative numbers, showing evidence of significant institutional participation difference. Thus, this work aims to compare the effects of institutional mechanisms promoted by Mercosur and the EU on this market by establishing an analysis framework based on the respective laws and agreements against demographic data. The results show that adherence to TRIPS is a necessary condition but not sufficient for its development. Adherence to the Lisbon Agreement also strengthens the capacity to sustain a substantial GI market. Additionally, the standardization of regulatory treatment and interventionist action helps stabilize and promote institutions in the GI market. Finally, this study concludes from the EU and Mercosur cases that a more robust, promotive and uniform system through its legal basis and dedicated structures results in more trustable institutions and potentially a more abundant market for GI products.

Childhood Blindness: Beyond VISION 2020 and the COVID-19 Pandemic

The World report on vision in 2019 found it difficult to evaluate VISION 2020’s impact on childhood blindness and VI since data on prevalence and causes were scarce. Considering the high chance of the global initiative missing its desired goal in children, we recommend that a sustainable version of it be launched soon. Central to this new initiative shall be better data collection on prevalence and causes of childhood blindness and VI, eye care provision and an updated and uniform system of reporting. Complete and updated data can better reflect the burden and monitor the impact of interventions. However, data collection will continue to be difficult due to the COVID-19 pandemic so the initial phase shall be tailored to the current situation.