Classification for Quality Assessment of the User Interface and its Application in the Development of Web-applications

The article considers a classification for validation and quality assessment of the user interface (UI) from the point of view of the main aspects of design and its application in the development of web-applications. The problem with inaccurately crafted user interface requirements is relevant and as a result, developers often have to redesign the interface and architecture of the application. The article analyzes the role and place of UI in the architecture of client-server applications, analyzes aspects of UI design, on the basis of which the classification is formed. The classification is used to analyze UI design oversights of the developed web-applications for BPMS “Fireproof Corporation” company. Based on the results of UI validation, a set of typical UI design oversights has been added

Composite Bosons in Silicon Nanosandwiches

The negative-U impurity stripes confining the edge channels of semiconductor quantum wells are shown to allow the effective cooling inside in the process of the spin-dependent transport, with the reduction of the electron-electron interaction. The aforesaid promotes also the creation of composite bosons and fermions by the capture of single magnetic flux quanta on the edge channels under the conditions of low sheet density of carriers, thus opening new opportunities for the registration of the quantum kinetic phenomena in weak magnetic fields at high temperatures up to the room temperature. As a certain version noted above we present the first findings of the high temperature de Haas-van Alphen, 300K, quantum Hall, 77K, effects as well as quantum conductance staircase in the silicon sandwich structure that represents the ultra-narrow, 2 nm, p-type quantum well (Si-QW) confined by the delta barriers heavily doped with boron on the n-type Si (100) surface

Modification of emission of CdTe nanocrystals by the local field of Langmuir-Blodgett colloidal photonic crystals

A light source on the surface of a slab of 2+1-dimensional photonic crystal has been prepared by the Langmuir-Blodgett deposition of a colloidal crystal on top of a thin film containing CdTe nanocrystals. The directional enhancement of the light emission intensity in the spectral range of the photonic bandgap has been revealed through the comparative examination of the angle-resolved transmission, diffraction, and photoluminescence spectra of the prepared structures. Changes in the emission spectrum have been tentatively explained in terms of the acceleration of the radiative recombination due to the increase in the local field strength at photonic bandgap resonance and changes in the emission diagram-as arising from the wavelength dependence of the topology of the local field pattern

Reflection of the inner world of a person in education

The processes of globalization and related integration that are taking place in the world, as well as the transition to the digitalization of all spheres of human life in the information society, adjustments introduced into people's lives, caused by unforeseen situations that cover the whole world, require a revision of the content of modern education. The relevance of the study is related to the need to search for stable support in a person in a constantly changing world, which inevitably leads to studying the role of the internal as related to the external factor in a person in the education system. The purpose of the article is to reveal the role of the inner world of a person in education. The leading research method was the analysis of the existing theoretical provisions and emerging practice in the spheres of pedagogy and education. The results of the study on the analysis of the role and place of the internal (motivation, impetus as the beginning of development, self-ordering) as related to the external (factors, causes, and conditions)

Mercury in the Barents region – River fluxes, sources, and environmental concentrations

Arctic rivers are receiving increased attention for their contributing of mercury (Hg) to the Arctic Ocean. Despite this, the knowledge on both the terrestrial release sources and the levels of Hg in the rivers are limited. Within the Arctic, the Barents region has a high industrial development, including multiple potential Hg release sources. This study presents the first overview of potential Hg release sources on Norwegian and Russian mainland draining to the Barents Sea. Source categories cover mining and metallurgy industry; historical pulp and paper production; municipal and industrial solid waste handling; fossil fuel combustion; and past military activities. Available data on Hg in freshwater bodies near the identified potential release sources are reviewed. Levels of Hg were occasionally exceeding the national pollution control limits, thereby posing concern to the local human population and wildlife. However, the studies were sparse and often unsystematic. Finally, we present new data of Hg measured in five Barents rivers. These data reveal strong seasonality in the Hg levels, with a total annual flux constituting 2% of the panarctic total. With this new insight we aspire to contribute to the international efforts of reducing Hg pollution, such as through the effective implementation of the Minamata Convention. Future studies documenting Hg in exposed Barents freshwater bodies are warranted.publishedVersio

Superconducting helical solenoid systems for muon cooling experiment at Fermilab

Novel configurations of superconducting magnet system for Muon Beam Cooling Experiment is under design at Fermilab. The magnet system has to generate longitudinal and transverse dipole and quadrupole helical magnetic fields providing a muon beam motion along helical orbit. It was found that such complicated field configuration can be formed by a set of circular coils shifted in transverse directions in such a way that their centers lay on the center of the helical beam orbit. Closed beam orbit configurations were also proposed and investigated. This paper describes the magnetic and mechanical designs and parameters of such magnetic system based on a NbTi Rutherford type cable. The helical solenoid fabrication, assembly and quench protection issues are presented

Use of an Energy-Efficient Vertical Tine Ripper to Improve Soil Condition Characteristics

В целях совершенствования технологии возделывания зерновых культур проведена оценка влияния традиционной минимальной обработки почвы и прямого посева на агрофизическое состояние почвы и продуктивность культур в севообороте. Отмечено, что минимализация обработки почвы и прямой посев культур в севообороте чистый пар – яровая пшеница – озимая рожь + овес – яровая пшеница на черноземе в Красноярской лесостепи способствуют сохранению доступной влаги весной и повышению содержания в почве подвижного фосфора и обменного калия к середине вегетации растений. При этом почва в слое 0–10 см становится плотной, а в горизонте 20–40 см остается рыхловато-плотноватой. При традиционной технологии обработки почвы урожайность яровой пшеницы Красноярская 12 по пару составила 3,2–3,4 т/га, при обработке дисковым орудием БДН – 2,9–3,2 т/га, при прямом посеве стерневой сеялкой – 2,6–2,9 т/га. Осенью в год посева получен урожай зеленой массы смеси овса и озимой ржи. Стерня, оставшаяся после скашивания зеленой массы, способствует накоплению снега и улучшает перезимовку озимой ржи, на следующий год формирующей урожай зерна в 1,5–2,1 т/га. Применение ресурсосберегающих технологий обработки почвы существенно снижает производственные затраты. При минимальной технологии трудозатраты сокращаются на 35,5 %, ГСМ – на 40,3 %, при использовании технологии прямого посева трудозатраты сократились на 49,1 %, ГСМ – на 64,2 % по сравнению с традиционной технологией, основанной на зяблевой вспашке. Повышению эффективности минеральных и органических удобрений при посеве культур по пару и по стерне будет способствовать обработка поверхности роторным вертикально-штыревым глубокорыхлителем после их внесенияIn order to improve the technology of cultivating grain crops, an assessment was made of the impact of traditional, minimal tillage and direct sowing on the agrophysical state of the soil and the productivity of crops in crop rotation. It is noted that the minimization of tillage and direct sowing of crops in the crop rotation pure fallow – spring wheat – winter rye + oats – spring wheat on chernozem in the Krasnoyarsk forest- steppe, contribute to the preservation of available moisture in spring and increase the content of mobile phosphorus and exchangeable potassium in the soil by the middle of the plant growing season. At the same time, the soil in the 0–10 cm layer becomes dense, and in the 20–40 cm layer it remains loose – dense. With the traditional technology of tillage, the yield of spring wheat Krasnoyarskaya 12 for a fallow was 3.2–3.4 t/ha; 2.9 t/ha. In autumn, in the year of sowing, a green mass of a mixture of oats and winter rye was harvested. The stubble left after mowing the green mass contributes to the accumulation of snow and improves the overwintering of winter rye, which forms a grain yield of 1.5–2.1 t/ha the next year. The use of resource-saving tillage technologies significantly reduces production costs. With the minimum technology, labor costs are reduced by 35.5 %, fuel and lubricants by 40.3 %, when using direct sowing technology, labor costs are reduced by 49.1 %, fuel and lubricants by 64.2 % compared to traditional technology based on autumn plowing. An increase in the efficiency of mineral and organic fertilizers when sowing crops in fallow and stubble will be facilitated by surface treatment with a rotary vertically pinned subsoiler after their applicatio

Genetic variability of indels in the prolactin and dopamine receptor D2 genes and their association with the yield of allanto-amniotic fluid in Russian White laying hens

Currently, there is virtually no information on genetic factors affecting the yield of allanto amniotic fluid, which is the raw material for the production of human and animal vaccines. Association studies including this trait are beneficial for increasing productivity of a biotechnological line of chickens used for the production of ‘Clean Eggs’. We examined here a population of the Russian White breed for the effects of indels in the prolactin (PRL) and dopamine receptor D2 (DRD2) genes on the yield of extraembryonic fluid (YEF) and embryo weight at 12.5 days of development. A 24-bp insertion in the 5' flanking region of the PRL gene significantly (P<0.01) increases YEF in the embryos. The heterozygous embryos contained the highest YEF (9.6 mL) than that of the homozygous insertion (9.4 mL) and deletion embryos (8.4 mL). We also found a significant association (P<0.001) between the PRL genotypes and egg weight (EW). The results of the present study suggest a significant association between the PRL gene variation and quantitative traits in the Russian White chickens, contributing to a long-term programme on the effective use of the genetic potential of Russian gene pool breeds and populations of chickens