Measuring angular coordinates in Unmanned Aerial Vehicles (UAVs) positioning systems and developing a new phase-metric method for goniometric control of UAVs

For the safe operation of Unmanned Aerial Vehicles (UAVs), an effective Automatic Control System (ACS) is necessary, which for successful operation requires high accuracy of the initial information about the UAV’s position in space. Based on the analysis of the shortcomings of the known orientation systems, a phase-metric method of goniometric (angular) control based on accelerometric and gyroscopic transducers for positioning the UAV is proposed, which has a higher accuracy and a wider range of measurement angles. The conducted study showed that in a wide range of rotation angles from 10 to 90 degrees, the root mean square error (RMS) of the results of calculating the rotation angle using the phase-metric method is 8,78 times less than the RMS of the results of calculating the rotation angle using the arctangent function. Reducing the error determines the effectiveness of the proposed method in UAV control systems

Evaluation of the accuracy of the phase metric method of goniometric control in geotechnical monitoring

The article substantiates the use of the phase metric method in measuring accelerometric systems, presents the results of experimental studies evaluating the accuracy of the developed method, as well as the results of testing the sensor on real monitoring object

DESCRIPTION OF DIETS OF THE 12-36-MONTH-OLD CHILDREN RESIDING IN MOSCOW

Significance. Imbalanced diet in early childhood often results in medical issues, including mental retardation, impaired adaptation mechanisms and worsened immunological protection. The amount of studies, which could help to assess dietary peculiarities of 1-3-year-old children living in a Russian megalopolis and reveal probable deficiencies of the essential macro- and micronutrients, as well as the prevalence of eating behavior disorders. The study was aimed at assessing the nature and peculiarities of the diet of the 12-35-month-old children residing in Moscow. Patients and methods. 106 1-3-year-old children were examined at two pediatric polyclinics in Moscow; they were divided into two groups: I – 12-23-month-old children, II – 24‑35-month-old children. Results. The authors performed a comprehensive analysis of actual diets of young children, including assessment of the nature of consumed foods and dishes, as well as of nutritional value of daily rations. Conclusions. The authors established that diets of most 1‑3‑year-old children residing in the megalopolis conform to the current criteria. Excessive consumption of high-protein foods, insufficient consumption of specialized functional foods, early introduction of “adult foods” and non-observance of the dietary pattern were observed in several cases

ХАРАКТЕРИСТИКА ПИТАНИЯ ДЕТЕЙ В ВОЗРАСТЕ 12−36 МЕС, ПРОЖИВАЮЩИХ В МОСКВЕ

Significance. Imbalanced diet in early childhood often results in medical issues, including mental retardation, impaired adaptation mechanisms and worsened immunological protection. The amount of studies, which could help to assess dietary peculiarities of 1-3-year-old children living in a Russian megalopolis and reveal probable deficiencies of the essential macro- and micronutrients, as well as the prevalence of eating behavior disorders. The study was aimed at assessing the nature and peculiarities of the diet of the 12-35-month-old children residing in Moscow. Patients and methods. 106 1-3-year-old children were examined at two pediatric polyclinics in Moscow; they were divided into two groups: I – 12-23-month-old children, II – 24‑35-month-old children. Results. The authors performed a comprehensive analysis of actual diets of young children, including assessment of the nature of consumed foods and dishes, as well as of nutritional value of daily rations. Conclusions. The authors established that diets of most 1‑3‑year-old children residing in the megalopolis conform to the current criteria. Excessive consumption of high-protein foods, insufficient consumption of specialized functional foods, early introduction of “adult foods” and non-observance of the dietary pattern were observed in several cases. Актуальность. Разбалансированное питание в раннем детском возрасте нередко приводит к нарушению состояния здоровья ребенка, в том числе к задержке психического развития, нарушению механизмов адаптации и снижению иммунологической защиты. На сегодняшний день в России проведено недостаточное количество исследований, позволяющих оценить особенности питания детей в возрасте 1−3 лет, проживающих в условиях мегаполиса, выявить у них возможные дефициты основных макро- и микронутриентов, а также распространенность нарушений пищевого поведения. Цель исследования: оценить характер и особенности питания детей в возрасте от 12 до 35 мес, проживающих в Москве. Пациенты и методы. В условиях двух детских поликлиник г. Москвы обследовано 106 детей в возрасте от 1 года до 3 лет, которые были разделены на две группы: I ― дети в возрасте 12−23 мес, II ― дети от 24 до 35 мес. Результаты. Проведен комплексный анализ фактического питания детей раннего возраста с оценкой характера потребляемых продуктов и блюд, а также пищевой ценности суточных рационов. Выводы. Установлено, что питание большинства детей от 1 года до 3 лет жизни в мегаполисе соответствует существующим нормативам. В ряде случаев отмечено избыточное потребление высокобелковых продуктов, недостаточное использование специализированных продуктов питания функционального назначения, раннее введение «недетских» продуктов, несоблюдение режима питания.