State Debt Policy and Bonds Market Behaviour

The authors examine the main factors determining state bond market yield dynamics and estimate the statistical characteristics of short-term transactions. Analysis of return time-series has shown that there exists an essential autocorrelation. Various forecasting schemes are tested, and predictors based on non-Gaussian distributions proved to be most effective. The decision algorithms have included a solution to the modified optimal portfolio problem, where the forecasts were used as expected returns and the covariance matrix was estimated via the forecasting errors. The authors show that these decision rules could effectively be applied in the Russian state bond marketstate debt; short-term state bonds; portfolio theory; returnforecasting; decision rules; risk premia; performance evaluation

Student performance interrelation with gadget use at lessons

© 2019, Dorma Journals. All rights reserved. Purpose: The relevance of the article is conditioned by the use of gadgets is increasing rapidly every year. The purpose of this study is to establish the relationship of students’ performance with their use of gadgets in the classroom. Methodology: The leading methods for the study of this problem are the methods of questioning and testing, allowing to make a qualitative analysis of the leading type’s characteristics of students’ attitude to the study. Result: Positive impact on academic performance consists in the fact that with the help of technical devices, students receive a share of information, prepare for classes, record lectures, view the textbook on the discipline. Negative impact on academic performance manifests itself in peeping answers and solutions to tasks on the test and on independent work; sitting in social networks during classes; distraction of students from educational material. Applications: The data obtained in the article can be used in social psychology, pedagogy, psychology of education, age psychology, sociology, as well as for further theoretical development of this issue. Novelty/Originality: The novelty and originality of the study lies in the fact that authors of the article reveal the positive and negative consequences of gadgets use by students in the classroom, as well as the motives for the use of gadgets in the educational process by teachers and students are shown

The Structure of N-phenyl-pyrazoles and Indazoles: Mononitro, Dinitro, and Trinitro Derivatives

This review explores the heterocyclic family of N-nitrophenyl pyrazoles and indazoles covering mainly their structural aspects, with special emphasis on the X-ray diffraction data. NMR spectroscopy and the theoretical calculations will also be briefly summarized. The synthesis and reactivity aspects will be reported when they are specific to these compounds.This work has been supported by the Spanish Ministerio de Economía, Industria y Competitividad (CTQ2012-35513-C02-02, CTQ2014-56833-R) and Comunidad Autónoma de Madrid (S2013/MIT-2841, Fotocarbon). Computer, storage, and other resources from the CTI (CSIC) are gratefully acknowledged.Peer Reviewe