An Experimental Study of the Vibrational Characteristics of a Diamond Circular Blade Using Electronic Speckle-Pattern Interferometry and FEM

The compact installation and technology for determining vibration characteristics by the ESPI method has been created. The experimental determination of the dynamic characteristics of a diamond circular blade with a diameter of 203.4 mm and a thickness of 1.19 mm using real-time electronic speckle interferometry is presented. 15 mode shapes of vibration were detected in the range from 100 to 5000 Hz. The program calculation of the natural frequencies and mode shapes is carried out for three values of the clamping inner diameter (42 mm, 44 mm, 46 mm). The options for calculating a disk with a rim and without a rim are considered. It is shown that the minimum mean squared error of the calculation is achieved for the values of the diameter of the disk 46 mm, 42 mm and 44 mm for the number of nodal circles 0, 1 and 2, respectively. To verify the accuracy of the interferometer, experimental, computational and analytical studies of console steel rod 200 × 22.25 × 3.78 mm in size were carried out.

Using of digital technologies in educational activities

The article discusses the possibilities of using digital technologies in teaching students of the master's program in the direction of training 27.04.05. Innovation. The main point is the fact that the computer program "Calculation of indicators for assessing the level of innovation security in the region", used in the educational activities of the University, was developed as part of a student's thesis.

Technical Feasibility of Deceit While a Vehicle is Weighed in Motion with a Very Low Speed

The study concerns the problem of overloading the vehicles driven on public roads. The gross vehicle mass and individual axle loads are limited by legal regulations. However, a tricking method, applicable to most popular designs of motor vehicles and multiaxial tractor-semitrailer units, has been shown that the weighing inspectors, even if provided with precise scales, may be deceived without any interference in the scale operation. In such a method, the current vehicle state may be changed by modifying the stiffness of individual pneumatic suspension springs, which is now technically feasible. The author used two authorial vehicle models and a simulation program. Calculation results obtained for a four-axle motor vehicle and a five-axle tractor-semitrailer unit, taken as an example, have been demonstrated. They show that a deceit is possible when a vehicle is weighed in motion with a very low speed.

Thysanoptera diversity associated with Mexican lemon (Citrus aurantifolia Christm.)

Objective: To calculate the monthly relative abundance of Thysanoptera species, according to the Margalef, Simpson and Shannon-Wiener diversity indices. Design / Methodology / Approach: The work was carried out in three geographic units with conventional management, during January-December, 2019 in the Reserva de la Biosfera Zicuirán-Infiernillo (Biosphere Reserve), Michoacán, Mexico. In each unit, 10 trees were selected through simple random sampling. Thrips counts were performed on ten shoots per tree every 15 d, for a total of 7200 shoots in the three geographic units. Thysanoptera individuals were placed in entomological jars. The variables were: number of thrips collected per shoot in sampled tree and geographic unit (orchard). To estimate the specific richness and structure of species, the program "calculation of diversity indices DIVERS" was used. Results: In the three geographical units studied, the recorded presence of Thysanoptera accounted for 12 to 17 species. For Nueva Italia 12 recorded species, two were permanent (16.66%), five abundant (41.66%), one scarce (8.3%) and four rare (33.33%). In Zicuirán, three species were permanent (17.64%), six abundant (35.29%), two scarce (11.76%) and six rare (35.29%). In Los Hoyos, four species were permanent (26.66%), four abundant (26.66%) and seven rare (46.66%). The abundance of species was represented by the genus Frankliniella and the species Scolothrips sexmaculatus and Scirtothrips citri. The highest species richness and abundance was found from January to May. In October and November, the value of the calculated indices was zero, which shows less richness and abundance of individuals. The best species uniformity was recorded during January and December, which meant a more stable and homogeneous relation. Study limitations/Implications. Pest resurgence, presence of Candidatus Liberibacter spp. and its vector Diaphorina citri. Findings / Conclusions: in Nueva Italia, 12 species were taxonomically determined; in Los Hoyos 15, and in Zicuirán 17 species, which are reported for the first time in the state of Michoacán, Mexico. At the geographic unit "Los Hoyos" diversity was higher, uniform and stable.

SISTEM PENDUKUNG KEPUTUSAN PRIORITAS LOKASI PERBAIKAN JALAN MENGGUNAKAN METODE AHP (ANALYICAL HIERARCHY PROCESS) DAN SAW (SIMPLE ADDITIVE WEIGHTING) STUDI KASUS KABUPATEN PASURUAN

AbstrakJalan merupakan prasarana yang ada di darat untuk sektor sosial dan ekonomi. Kesadaran pemerintah dalam memperbaiki jalan yang rusak merupakan hal utama dalam anggaran daerah. Peningkatan jumlah lokasi jalan berkaitan dengan peningkatan jumlah perbaikan jalan yang akan dilakukan. Penelitian ini bertujuan untuk menentukan lokasi perbaikan jalan yang terbaik. Jalan yang diperbaiki berdasarkan dari beberapa alternatif posisi lokasi perbaikan jalan. Cara menetapkan lokasi perbaikan jalan dengan memberikan posisi peringkat alternatif berdasarkan kriteria yang sudah ditetapkan. Berdasarkan pertimbangan kriteria dapat diukur secara kuantitatif dengan menggunakan metode AHP (Analytical Hierarchy Process) dan SAW (Simple Additive Weighting). Berdasarkan hasil pengujian terhadap program sudah dapat digunakan. Hasil dari perhitungan program sudah sesuai dengan hasil perhitungan yang sudah dilakukan. Pengujian dilakukan terhadap 10 responden. Dengan sistem ini diharapkan membantu pihak Pekerjaan Umum (PU) Bina Marga untuk menentukan lokasi perbaikan jalan secara lebih objektif. Kata Kunci: Analytical Hierarchy Process, Simple Additive Weighting, Sistem Pendukung KeputusanAbstractThe road is a land-based infrastructure for the social and economic sectors. Government awareness in repairing a broken road is a key thing in a regional budget. The increasing number of road locations relates to the increasing number of road repairs to be made. The research aims to determine the location of the best road repairs. The repaired path is based off several alternative position of road repair location. How to set the road repair location by providing an alternate ranking position based on the criteria already set. Based on consideration criteria can be measured quantitatively by using AHP (Analytical Hierarchy Process) and SAW (Simple Additive Weighting). Based on the test results of the program can be used. The results of the program calculation are already in accordance with the calculated results. Testing was conducted against 10 respondents. This system is expected to assist the Public Works (PU) of Bina Marga to determine the location of road repairs in a more objective. Keyword: Analytical Hierarchy Process, Simple Additive Weighting, Decision Support System

Suggestopedia Method as an Effective Method in Teaching Reading Comprehension for Senior High School

This research is to know is there is significant effect in reading comprehension achievement in X grade at SMK Walisongo 1 Gempol, being taught by suggestopedia method. This research uses quantitative research. The research’s object is X AK-2 of SMK Walisongo 1 Gempol has 28 students. The researcher divides the main activity into pre-test, treatment and post-test. Based on the SPSS 23 Program calculation from mean result of pre-test 70.1 and the result mean of post-test is 83.5. The students’ score is increasing after being given by the treatment. The result of the calculation of this research showed that (sig 2-tailed = 0.002) which is less from (<) 0.05 and significance 5%. It mean that the alternative hypothesis is accepted and the null hypothesis is rejected. From the result of the data analysis above, the use suggestopedia method gives significant effect in students’ reading comprehension achievement.

Suggestopedia method as an effective method in teaching reading comprehension for senior high school

This research is to know is there is significant effect in reading comprehension achievement in X grade at SMK Walisongo 1 Gempol, being taught by suggestopedia method. This research uses quantitative research. The research’s object is X AK-2 of SMK Walisongo 1 Gempol has 28 students. The researcher divides the main activity into pre-test, treatment and post-test. Based on the SPSS 23 Program calculation from mean result of pre-test 70.1 and the result mean of post-test is 83.5. The students’ score is increasing after being given by the treatment. The result of the calculation of this research showed that (sig 2-tailed = 0.002) which is less from (<) 0.05 and significance 5%. It mean that the alternative hypothesis is accepted and the null hypothesis is rejected. From the result of the data analysis above, the use suggestopedia method gives significant effect in students’ reading comprehension achievement This article investigates major points of the speech verbs. On this case, different meaning of verbs was analyzed from Russian into English. Therefore, analyses of the theory with methodology were described to make better diffusion. To conclude with both outcomes and shortcomings were outlined to get further analyses as the whole.

ANGULAR MOVEMENT PROGRAM CALCULATION PROCEDURE SPACECRAFT WHEN TAKING THE SURFACE OF THE EARTH IN AREA MODE

Currently increased interest in satellite images of the Earth's surface with high resolution terrain (1 to 10 m). To obtain such images, you must use a long focus optical system (OS) having a limited field of view that does not allow the images of the large width. To increase the effectiveness of shooting in modern space systems (SS) Earth observation provides the opportunity after shooting a segment of the Earth's surface to redirect the OS to another area and spend it shooting. With sufficient speed shift OS it is possible to survey two or more adjacent parcels, which is almost equivalent to the corresponding increase in the width of the field of view of the removing apparatus. In this connection there is the task of restoring the OS, which is solved by the use of appropriate hardware and software control the angular movement of the removing apparatus. When creating the SS there is also the need to solve the following tasks: calculation of the program angular motion in a given length of the removable sections and a predetermined number of adjacent strips to be shot, with the purpose of definition of system requirements, spacecraft (SC) control and calculation under given characteristics of the system orientation of the SC possible number of the maximum length and remove adjacent portions of the surface of the Earth. To solve these tasks the mathematical model software of angular motion of the SC. Given the necessary initial data, mathematical model and method of calculation of kinematic parameters of a software angular motion of a SC in the mode of area highway shooting adjacent sections of the Earth's surface located at a predetermined distance from a trace route SC; examples and results of numerical calculations of the programmes angular motion by moving the instrument in remote sensing.

КАРТОГРАФИЧЕСКОЕ ОБЕСПЕЧЕНИЕ ГЕОЭКОЛОГИЧЕСКОГО МОНИТОРИНГА БАССЕЙНА ОЗЕРА БАЙКАЛ

Разрабатываемая методология геоэкологического мониторинга основана на выявлении антропогенных источников вещества и наблюдении связей между ними и объектами среды путем рассмотрения объектов в качестве смесей, а источников в качестве их компонентов, с использованием подходов ландшафтного мониторинга. Обоснованы методические подходы к разработке картографического обеспечения мониторинга структуры загрязнения и распределения загрязнителей в бассейне озера Байкал. Для обоснования сети наблюдений и контроля, экстраполяции результатов мониторинга на территории, не охваченные непосредственными наблюдениями, показа оперативной информации о состоянии геосистем и экосистем требуется картографическая основа. Методика картографирования базируется на основных положениях учения о геосистемах В.Б. Сочавы. Методические приемы геоинформационного картографирования были адаптированы применительно к бассейну оз. Байкал. Модель SRTM 4й версии, взятая за основу для получения изолиний рельефа, была преобразована и приведена к масштабу 1:5 000000, а все цифровые слои были интегрированы в единую картографическую проекцию и систему координат (WGS 84). Сопоставление пространственно привязанных слоев рельефа и гидрографической сети в QGIS позволило разграничить бассейны крупных, средних и малых притоков Байкала. Инструментами выявления структуры хозяйственной деятельности служат методы ландшафтногеохимического синтеза, картографирования агроландшафтов, ландшафтного планирования и ретроспективного картографического анализа геосистем с длительной историей хозяйственного освоения. Выявление структуры загрязнения Байкала, его притоков и водосборного бассейна в целом осуществляется путем анализа пространственного и временного распределения загрязнителей в компонентах природной среды. Картографирование дифференциации загрязнителей проводится с использованием современных методов геоинформационного анализа и моделирования, которые реализованы в программе ArcGIS 10. Расчет составов выбросов неизвестных источников проводится с применением методов многомерного анализа. Проанализированы основные параметры ландшафтногеохимической дифференциации бассейна озера Байкал, составлена карта дифференциации поверхностных вод по способности вод к самоочищению, разработана схема районирования территории по способности обеспечивать тот или иной состав вод. The developed methodology of geoenvironmental monitoring is based on identification of anthropogenic sources of substance and the observation of communications between them and the objects of the environment by consideration of the objects as mixes, and the sources as their components, with use of approaches of landscape monitoring. Methodical approaches to development of cartographic ensuring of monitoring of pollution and distribution of pollutants in the basin of Lake Baikal are proved. The cartographic basis is necessary for justification of the network of observations and monitoring, extrapolation of results of monitoring on the territories which are not captured by immediate observations, display of operational information on a condition of geosystems and ecosystems. The technique of mapping is based on original positions of V.B. Sochava doctrine about geosystems. Methodical techniques of geoinformation mapping were adapted in relation to the basin of Lake Baikal. The SRTM model of the 4th version taken as a basis for receiving isolines of a relief was transformed and scaled by 1:5,000,000. All digital layers were integrated into a uniform cartographic projection and a frame (WGS 84). Comparison of spatially attached layers of a relief and a hydrographic network in QGIS allowed us to differentiate the pools of the large, average and small inflows of Baikal. The methods of landscapegeochemical synthesis, mapping of agrolandscapes, landscape planning and the retrospective cartographic analysis of geosystems with the long history of economic development served as the instruments of identification of the structure of economic activity. Identification of pollution structure of Lake Baikal, its inflows and a catchment basin in general is carried out by the analysis of spatial and temporary distribution of pollutants in environment components. Mapping of pollutants differentiation is carried out with use of the modern methods of the geoinformational analysis and the model operation, which are realized in the ArcGIS 10 program. Calculation of compositions for the emissions of unknown sources is carried out with application of methods of the multidimensional analysis. Key parameters of landscapegeochemical differentiation of the basin of Lake Baikal are analyzed. The map of differentiation of the surface water on ability of waters to selfcleaning has been compiled. The scheme of regionalization for the territory on ability to provide this or that composition of waters has been developed.