Comparative Study on Very Similar Jeungdoga Scripts through Image Analysis - Fundamental Difference between Treasure No. 758-1 and Treasure No. 758-2 -

Photographic images of the Samseong-version (三省本: Korea’s Treasure No. 758-1) and the Gongin-version (空印本: Korea’s Treasure No. 758-2) of Nammyeongcheon Hwasangsong Jeungdoga (南明泉和尙頌證道歌: Nanmingquan Song Zhengdaoge) were compared and analyzed to investigate the differences between the two versions. According to a report in 2012 at the time of the designation of the Gongin-version as Korea’s treasure, both versions were printed from the same woodblocks. The Gongin-version is presumed to be a later print than the Samseong-version. The two versions are very similar in format and shape of border lines and characters. It is difficult to determine the differences with the naked eye, even for experts. In this study, based on the printing characteristics observed from each version through image analysis, useful evidence to determine whether it was printed using the same or different woodblocks and the order of printing was collected. As a result of careful image comparison and analysis, we concluded that the Samseong- and the Gongin-version were printed from different woodblocks, or possibly different typesetting. It was difficult to agree with the content of the report that the Gongin-version was a later print than the Samseong-version. In addition, it was noted that the Gongin-version print has characteristics quite different from the typical characteristics of woodblock printing seen in the Samseong-version. Additional investigations and follow-up studies on the printing technology used for Gongin-version print and the timing of printing are recommended.

Protection of the Rights of Persons Who Have Lost Their Jobs Because of the Spread of COVID-19

The aim of the study was to identify possible ways to protect the rights of people who have lost their jobs due to the spread of COVID-19, and thus to analyze the effectiveness of international experience. The information in this article is obtained by three methods: direct observation, comparison, and analysis of the content of the documents. However, at the beginning of the pandemic, the regulation of guarantees and social protection of the rights of dismissed people was not enough. In the future, job seekers must learn the skills of the most popular professions and specialties: in the field of healthcare, in the field of digital technology and transportation. In turn, government programs should promote the reconversion of the most vulnerable groups in the labor market through free courses and online learning programs, and assistance in the employment of people with disabilities. It is concluded that, during the pandemic, most countries modified their labor regulations and provided labor subsidies to preserve jobs. However, during recovery after the pandemic, governments in all countries must change their approach.

Does MBA Studies Increase the Value of Human Capital in the Labour Market?

Presented paper focuses on a research of added value of MBA studies organized at Academy of crisis management and management, Ltd. Uherské Hradiště on its graduates. The added value in this research is monitored in correlation to graduates’ career, recorded changes and also in correlation to the development of their knowledge and skills. Attention is also devoted to the returns of funds invested in these studies. The data are obtained thanks to a semistructured interview and a questionnaire survey among MBA graduates. They are processed by using mathematical-statistical methods, methods of comparison and analysis of information.

THE NEED FOR COMPREHENSIVE PREVENTION OF HYPERESTHESIA AFTER THE TEETH WHITENING PROCEDURE

Relevance: people's need for teeth whitening is growing every year. At the same time, during various bleaching procedures, changes in the structure of the surface of the teeth may occur and as a result, there is an increased sensitivity (hyperesthesia) of the teeth, which in some cases leads to the rejection of bleaching. At the same time, there is little data in the scientific literature today about the features of hyperesthesia after teeth whitening, in particular about the ratio of hypersensitivity to various factors (chemical, thermal, mechanical). Also, the predominance of dental hyperesthesia, depending on their localization, has not been studied. Purpose: to analyze the features of hyperesthesia after teeth whitening. Methodology. In this study, using the index of the intensity and prevalence of hyperesthesia, the features of hyperesthesia after teeth whitening were analyzed in 100 patients. For the study, patients with the enamel color of the red-brown group A (Vita Classic), namely to the colors A2 and A3, were selected.All patients underwent chemical teeth whitening using the Opalescence Boost PF whitening system. Comparison and analysis of the results of the conducted study were performed in the IBM SPSS Statistics 23 program. The Student's t-test was used to assess the statistical significance of the differences between the samples. The differences were considered statistically significant at p < 0.05. Result. As a result, it was revealed that hyperesthesia after bleaching prevailed in the frontal part of the lower jaw teeth. Hyperesthesia of teeth after bleaching was characterized by a generalized form and tended to decrease in intensity after 2 weeks. At the same time, the reaction to stimuli was preserved. Conclusions. The above dictates the need for comprehensive prevention of hyperesthesia after the teeth whitening procedure.

Comparison and analysis of several instantaneous reactive power calculation methods

Briefly describes several more common algorithm of reactive power when the input signal is a sine signal and research all kinds of reactive power calculation method, through matlab using the theory of monte carlo random multiple sets of random number them as the amplitude and phase Angle of voltage, current, the different calculation method of the size of the instantaneous reactive power, To get the best calculation method. Multiple groups of random numbers can avoid the error caused by using only one set of data for testing in existing papers.