scholarly journals A NONLINEAR CONVERSION MODEL FORM ITRFYY TO CGCS2000

Author(s):  
F. Wang ◽  
P. Zhang ◽  
Z. Y. Sun ◽  
Q. L. Zhang

Abstract. At present, ITRS series reference frameworks are widely used in the world. The results of GNSS are mostly based on the ITRF framework. Transform from ITRF to CGCS2000 is not easy, which restricts the promotion and use of CGCS2000. The conversion relationship between CGCS2000 and ITRF framework has imminent practical significance. This paper constructs the epoch reduction and frame conversion two-steps model which estimated the nonlinear model to solve the appeal problem. Effective test show that the nonlinear model accesses an improvement in not only precession but also accuracy relative to the tradition model.

2019 ◽  
Vol 6 (3) ◽  
pp. 54-60
Author(s):  
Mikhail Jurievich Rudiuk ◽  
Anastasiia Vladislavovna Gerasimova ◽  
Ekaterina Mikhailovna Pomozova

The authors' task was to analyze the development of quality management systems at the current stage in Russia, as well as at the previous stage in the USSR. As a result, we came to the conclusion that the factors stimulating the implementation of ISO 9000 standards are the need to promote products on the world market, as well as the possibility of receiving orders from the state. In the future, strict adherence to these standards will allow enterprises to significantly reduce the likelihood of lawsuits from consumers, which is important in the context of the development of the legislative framework and increased control over the business. The practical significance of the article is the possibility of familiarizing management and personnel with quality services, whose task is to prepare for certification for compliance with ISO 9000 standards in how this process took place in other companies. The originality of this work is to summarize the experience of implementation of ISO 9000 standards at enterprises and to analyze the factors contributing to or hindering this process.


Author(s):  
Guoqing Ma

Abstract Island studies play an important role in the development of anthropology. It is of academic value and practical significance to understand the island world as the field where multiple modernization forces and globalization interwine. This paper explores the intricate and diverse connections between continental and marine culture from a perspective of “viewing the world through the island”. In terms of overall diversity and exoteric mobility, this paper reviews the various aspects of island studies, examines the internal and external transformation of islands within land-sea interaction, and analyzes the dynamic historical process of the island world’s involvement in the global network, which blends and integrates various cultural elements of the external world. In the context of globalization, the island world is undergoing dramatic changes and in coping with them generating its new features.


2020 ◽  
Vol 48 (7) ◽  
pp. 648-655
Author(s):  
Yu Han ◽  
Mengnan Li ◽  
Huijing Ma ◽  
Hailan Yang

AbstractCervical insufficiency (CI) is a mainly disease leading to recurrent abortions and preterm birth which may present in about 1% of obstetric populations. Recurrent pregnancy losses caused by CI incur serious economic burdens on society as well as huge psychological burdens to family members. However, many patients even clinicians in some areas of the world still remain confused about this disease. At the same time, the etiology of CI is still uncertain and it is still a controversial disease in diagnosis and treatment. This article summarizes the potential risk factors associated with CI, which could be worthy of attention and helpful for future research. It also reviews the methods for diagnosis and treatment of CI to better understand this noteworthy disease, as well as presents the related consensus and controversies according to the newly updated guidelines, which has practical significance for conducting more in-depth investigations in the future.


2019 ◽  
pp. 10-16
Author(s):  
Iryna Oleksandrivna Kalienik ◽  
Olena Bronislavivna Shydlovska ◽  
Tetiana Ivanivna Ishchenko ◽  
Viktor Fedorovich Dotsenko

Purpose. To consider the concept of “phototourism”, to find out its essence and difference from other special types of tourism, to characterize its classification features. To reveal the prerequisites for its development in Ukraine to increase the tourist attractiveness of the country. Methods. For research, methods such as system-structural, abstract-logical, analysis, synthesis, generalization, observation, comparison were used; classification and literary methods. The system-structural method was used to assess the possibility of the existence of domestic hotels that will be able to provide photo tourists with services such as renting specialized photo equipment, workshops on using cameras, organizing photo tours and others. Thanks to the abstract-logical method, the theoretical aspects of the development and functioning of phototourism in Ukraine were revealed. The comparison method was used to evaluate the pricing policy of digital and film cameras. Results. The classification of photo tours and the specific features of phototourism, which distinguish it from other types of tourism, are given. The main trends in the development and popularization of phototourism in the world and Ukraine are investigated. Foreign photo tours and their specifics are analyzed. A survey was carried out among the population of Ukraine about their interest in hotel enterprises that can provide services for phototourists, organize tours and offer specialized photographic equipment for rent. A comparative assessment of the pricing policy of various types of photographic equipment is provided, which can be used in phototours organized by a hotel company specializing in phototourism. The innovative aspects of phototourism, which can be used in practice in the domestic hotel business, are analyzed. The given examples of such phototouristic regions as Cherkasy, Carpathian, Transcarpathian and Chernigov, which testify to the potential of Ukraine as a country that has the opportunity to expand its tourism market. Scientific novelty. Scientific novelty lies in substantiating the feasibility of creating a hotel for phototourists in Ukraine, as a new way to popularize phototourism in the hotel industry of the country. Phototourism with the use of film cameras is the newest direction in the tourism sector not only in Ukraine, but throughout the world. The practical significance lies in the fact that the popularization of phototourism can bring the industry to a qualitatively new level in the formation of tourism offers and contribute to the creation of a modern competitive tourism product.


Ekonomika APK ◽  
2020 ◽  
Vol 308 (6) ◽  
pp. 91-97
Author(s):  
Bohdan Dukhnytskyi

The purpose of the article is to investigate the problem of food shortages for a significant number of the population worldwide, taking into account the history of the problem, its causes, consequences, statistics and prospects for solving in accordance with existing trends. Research methods. Methods used: theoretical generalization - for characterizing international organizations and program goals that work to combat hunger, analysis and synthesis - for consideration the dynamics number of starving people on the planet and identify regions and countries with largest expanding such problem, comparative evaluation - for comparing absolute and relative statistical indicators in various aspects of the problem, historical - for structuring over time the measures taken to ensure sufficient food supply and their actual results, graphic - for better visualization the comparative statistics. Research results. Information on the responsible institutions that settle food shortages around the world is provided, key issues that need attention in the context of food insecurity are described, quantitative indicators of the global food problem are considered, the uneven nature of its distribution is highlighted, given list of the factors that deepen social and economic problems for the population, a clear link between poverty and chronic malnutrition is determined, critical remarks about the reality of prospect to overcome hunger according to the planned schedule are formed. Scientific novelty. An assessment of development the situation with the number of starving people in the world in the coming decades is made, taking into account an expected demographic changes and potential resources of agricultural production as a key sector in this problem. Practical significance. The provisions of the article are aimed at underlining weaknesses in the global food security system, detailing them and presenting to domestic authorities and business structures in order to find a balance between expanding export potential, participating in international initiatives and maintaining economical-effective agricultural sector. Figs.: 1. Refs.: 17.


2021 ◽  
pp. 81-85
Author(s):  
Ke Wang

Problem statement and its relevance. One of the pioneers of Chinese contemporary piano art, whose creative activity certainly contributed to its formation, further rapid rise and recognition of creative achievements on the world art horizon, is a prominent pianist — Liu Shikun, who today has received complete recognition as a brilliant performer, composer and teacher thus marked the beginning of the so­called piano boom in China, and with it — the gradual formation and confident rise of the Chinese piano school. If various aspects of contemporary Chinese performing arts have repeatedly been subjected to musicological discourse in the scientific community, the direct and comprehensive coverage of Liu Shikun’s leading role in the process of forming the foundations of Chinese piano performing arts, as well as careful analysis and representation of his creative achievements and pedagogical fields are still relevant for basic musicological research. The purpose of this article is to highlight and analyze the main vectors of creative activity of the famous Chinese musician Liu Shikun in the context of the development of piano art in China in the second half of the XX — early XXI centuries. The methodology of the work focuses on the principles of historicism and source studies, which provides coverage of Liu Shikun’s musical work in a single context with cultural, historical and artistic phenomena and their interaction. In addition, methods of retrospective, structural­system analysis, interpretation of facts, argumentation and generalization are involved. The results obtained during the achievement of the goal of this work focus on the representation and characterization of Liu Shikun’s creative achievements in the field of concert performance, teaching and composition and the artist’s contribution to the development of Chinese piano culture. The topicality of the article lies in the first attempt in Ukrainian musicology to comprehensively cover the main directions of creative activity of the famous Chinese pianist Liu Shikun in the projection of his influence on the formation of the current state of Chinese piano art. The practical significance of the facts and analysis of the main vectors of Liu Shikun’s creative activity carried out in this work is the possibility of using this material in courses on the history and theory of modern piano art, in particular in sections on the Chinese piano school, as well as for further more thorough research of Liu Shikun’s musical creativity, systematization of scientific information on his contribution to the development of musical art of this country. Conclusions. Summarizing the above given material, it should be noted that the fruitful and multifaceted work of this artist directly influenced the development and professionalization of piano performance in China at that time. This influence was due to the comprehensive recognition of the artist’s creative achievements by the world music community, in particular through numerous concert performances in leading countries (especially in partnership with leading orchestras and outstanding musicians); creation of original samples of concert repertoire on the basis and with specificity of the Chinese traditional melody; organization of a dense network of author’s music schools (art centers) and formation of the foundations of the Chinese national piano pedagogy.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Anwar Zeb ◽  
Sunil Kumar ◽  
Almaz Tesfay ◽  
Anil Kumar

Purpose The purpose of this paper is to investigate the effects of irregular unsettling on the smoking model in form of the stochastic model as in the deterministic model these effects are neglected for simplicity. Design/methodology/approach In this research, the authors investigate a stochastic smoking system in which the contact rate is perturbed by Lévy noise to control the trend of smoking. First, present the formulation of the stochastic model and study the dynamics of the deterministic model. Then the global positive solution of the stochastic system is discussed. Further, extinction and the persistence of the proposed system are presented on the base of the reproductive number. Findings The authors discuss the dynamics of the deterministic smoking model form and further present the existence and uniqueness of non-negative global solutions for the stochastic system. Some previous study’s mentioned in the Introduction can be improved with the help of obtaining results, graphically present in this manuscript. In this regard, the authors present the sufficient conditions for the extinction of smoking for reproductive number is less than 1. Research limitations/implications In this work, the authors investigated the dynamic stochastic smoking model with non-Gaussian noise. The authors discussed the dynamics of the deterministic smoking model form and further showed for the stochastic system the existence and uniqueness of the non-negative global solution. Some previous study’s mentioned in the Introduction can be improved with the help of obtained results, clearly shown graphically in this manuscript. In this regard, the authors presented the sufficient conditions for the extinction of smoking, if <1, which can help in the control of smoking. Motivated from this research soon, the authors will extent the results to propose new mathematical models for the smoking epidemic in the form of fractional stochastic modeling. Especially, will investigate the effective strategies for control smoking throughout the world. Originality/value This study is helpful in the control of smoking throughout the world.


2019 ◽  
Vol 67 ◽  
pp. 06001 ◽  
Author(s):  
George Abuselidze ◽  
Olga Mohylevska ◽  
Nina Merezhko ◽  
Nadiia Reznik ◽  
Anna Slobodianyk

The article reveals the essence and features of the development of the stock market in Ukraine. It was established that the vigorous activity of countries in the world financial markets means that they also face a risk of global financial turmoil (the so-called “domino effect”). It is determined that the impact of global financial instability on the country depends on the openness of its economy that will lead to significant external “shocks”. The possibility of providing effective influence on domestic stock market activity with taking into account the changing world situation, development of perfect trading strategies for each participant is substantiated. The conducted analysis of the world market conditions of stock markets in recent years has made it possible to assess the real risks for new participants in the stock market and become the basis for the development of an appropriate effective trading strategy. The practical significance of the results is that they allow for a measurable approach to assessing the existing risk when choosing one or another trading strategy to move to the world stock market.


2013 ◽  
Vol 807-809 ◽  
pp. 1413-1416
Author(s):  
Zheng Yang Wang ◽  
Chun Mei Liu

Judging from the current status of water resources all over the world, the analysis of our country the need for reuse of rainwater and its practical significance at this stage. The using of rain water from domestic and foreign , and the actual situation of the construction of rainwater collection, processing, using of systems, rain water reuse in the case of water quality standards implementation rainwater recycling of resources. The water resources are shortage is another important practical problem ,the rainwater reuse is our country's new way to solve water resources pool. However, the disposing process of rain still has some practical problems, which will be necessary to further our study and resolve.


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