Геодинамика территории Азербайджана на основе данных GPS за 2017–2019 гг.

the results obtained, in conjunction with these seismicity and the mechanisms of earthquakes, allow to determine the modern geodynamic situation of the studied region. The aim of the work was geodetic analysis and comparison of the results of GPS stations obtained for the period 2017-2019. on the territory of Azerbaijan. Methods. In the process of studying geodynamic processes using GPS technologies, two spatio-temporal modes are mainly used: a single redefinition of the initial coordinates of the points of geodetic networks and the displacement of the initial values of deformations. GPS data were processed using the GAMIT/GLOBK program. Results. One of the most pronounced features of the GPS velocity field is a decrease in the velocities of GPS stations (northern component of VN), perpendicular to the direction of expansion of the Greater Caucasus surface from south to north. The movement of the earth's surface to the north-north-east is interpreted as one of the reasons for this accumulation of stress.In addition, there is a tendency for horizontal movement in the Kura Depression and the Lesser Caucasus, which is reflected in the increase in velosity from west to east along the extension of the mountain range. It was determined that the earth's crust shortened at a velosity of ~ 5 mm / year in the Baku (Absheron peninsula). During 2019, on average, up to 8.4 mm per year in the north-northeast direction is observed for the territory of Azerbaijan. Separate velocities were also calculated for each station. Compared to 2018, it was determined that out of 24 GPS stations PQLG, XNQG, IMLG, QZXG, GANG, MNGG, FZLG, SATG, LKRG, LRKG and YRDG stations, the value of horizontal velocities increased by 0.5-7.0 mm/year, ZKTG, QBLG. At QSRG, ATGG, GDBG, AGDG, ALIG, JLVGG, GALG, GOBG and NDRG stations, the velocities values decreased by 0.5-3.1 mm/year. In 2019, the highest velocities were observed at Ganja, Mingachevir and Saatli stations. On average, velocities were 3.1-9.6 mm/year in the Greater Caucasus, 6.9-16.5 mm/year in the Kura Basin, 10.2-14.8 mm/year in the Talish area and on the Apsheron Peninsula. It varies between 3.6-4.8 mm/year. полученные результаты в совокупности с приведенной сейсмичностью и механизмами землетрясений позволяют определить современную геодинамическую ситуацию изучаемого региона. Целью работы являлся геодезический анализ и сравнение результатов GPS-станций, полученных за период 2017–2019 гг. на территории Азербайджана. Методы работы. В процессе изучения геодинамических процессов с использованием GPS технологий в основном применяются два пространственно-временных режима: однократное переопределение начальных координат точек геодезических сетей и смещение начальных значений деформаций. Данные GPS обрабатывали с помощью программы GAMIT/GLOBK. Результаты работы. Одной из наиболее ярко выраженных особенностей поля скорости GPS является уменьшение скоростей станций GPS (северный компонент VN), перпендикулярных направлению расширения поверхности Большого Кавказа с юга на север. Движение земной поверхности на север-северо-восток интерпретируется как одна из причин такого накопления напряжения. Кроме того, существует тенденция горизонтального движения в Курской впадине и на Малом Кавказе, что отражается в увеличение скорости с запада на восток по продолжению горного хребта. Было установлено, что земная кора сокращалась со скоростью ~ 5 мм/год в Баку (Апшеронский полуостров). В течение 2019 года в среднем по территории Азербайджана наблюдается до 8,4 мм в год в северо-северо-восточном направлении. Отдельные скорости были также рассчитаны для каждой станции. По сравнению с 2018 годом было определено, что из 24 GPS станций PQLG, XNQG, IMLG, QZXG, GANG, MNGG, FZLG, SATG, LKRG, LRKG и YRDG, значение горизонтальных скоростей увеличилось на 0,5–7,0 мм/год, ZKTG, QBLG. На станциях QSRG, ATGG, GDBG, AGDG, ALIG, JLVGG, GALG, GOBG и NDRG значения скоростей снизились на 0,5–3,1 мм/год. В 2019 году самые высокие скорости наблюдались на станциях Гянджа, Мингячевир и Саатлы. В среднем скорости составляли 3,1–9,6 мм/год на Большом Кавказе, 6,9–16,5 мм/год в бассейне Куры, 10,2–14,8 мм/год в Талышском районе и на Апшеронском полуострове. Колебания находятся в пределах 3,6–4,8 мм/год.

Analysis of Migrating and Non-Migrating Tides of the Extended Unified Model in the Mesosphere and Lower Thermosphere

Atmospheric tides play a key role in coupling the lower, middle and upper atmosphere/ionosphere. The tides reach large amplitudes in the Mesosphere and Lower Thermosphere (MLT) where they can have significant fluxes of energy and momentum and so strongly influence the coupling and dynamics. The tides must therefore be accurately represented in Global Circulation Models (GCMs) that seek to model the coupling of atmospheric layers and impacts on the ionosphere. The tides consist of both migrating (sun-following) and non-migrating (not sun-following) components, both of which have important influences on the atmosphere. The Extended Unified Model (ExUM) is a recently developed version of the Met Office's Unified Model GCM which has been extended to include the MLT. Here, we present the first in-depth analysis of migrating and non-migrating modes in the ExUM. We show that the ExUM produces both non-migrating and migrating tides in the MLT of significant amplitude across a rich spectrum of spatial and temporal modes. The dominant non-migrating modes in the MLT are found to be the DE3, DW2 and DW3 in the diurnal tide and the S0, SW1 and SW3 in the semidiurnal tide. These modes can have monthly mean amplitudes at a height of 95 km as large as 35 ms−1 / 10 K. All the non-migrating modes exhibit a strong seasonal variability in amplitude and significant short-term variability is evident. Both the migrating and non-migrating modes exhibit notable variation with latitude. For example, the temperature and wind diurnal tides maximise at low latitudes and the semidiurnal tides include maxima at high latitudes. Our results demonstrate the capability of the ExUM for modelling atmospheric migrating and non-migrating tides and lays the foundation for its future development into a whole atmosphere model. To this end, we make specific recommendations on further developments which would improve the capability of the model.

High-dimensional temporal mode propagation in a turbulent environment

Temporal modes of photonic quantum states, intrinsically possess high dimensional Hilbert spaces, provide a new framework to develop a robust free-space quantum key distribution (QKD) scheme in a maritime environment. We show that the high-dimensional temporal modes can be used to fulfill a persistent communication channel to achieve high photon-efficiency even in severe weather conditions. We identify the parameter regimes that allow for a high-fidelity quantum information transmission. We also examine how the turbulent environment affects fidelity and entanglement degree in various environmental settings.

Generation, characterization, and manipulation of quantum correlations in electron beams

Entanglement engineering plays a central role in quantum-enhanced technologies, with potential physical platforms that outperform their classical counterparts. However, free electrons remain largely unexplored despite their great capacity to encode and manipulate quantum information, due in part to the lack of a suitable theoretical framework. Here we link theoretical concepts from quantum information to available free-electron sources. Specifically, we consider the interactions among electrons propagating near the surface of a polariton-supporting medium and study the entanglement induced by pair-wise coupling. These correlations depend on the controlled interaction interval and the initial electron bandwidth. We show that long interaction times of broadband electrons extend their temporal coherence. This in turn is revealed through a widened Hong–Ou–Mandel peak and is associated with an increased entanglement entropy. We then introduce a discrete basis of electronic temporal modes and discriminate between them via coincidence detection with a shaped probe. This paves the way for ultrafast quantum information transfer by means of free electrons, rendering the large alphabet that they span in the time domain accessible.

An Analytical Study of Ideally Inherent Operative Transformation of the Original Mental Process in Edmund Husserl’s Phenomenology

This research paper entitled “An Analytical Study of Ideally inherent Operative Transformations of the Original Mental Process in Edmund Husserl’s Phenomenology” has three objectives: 1) to study the mental process of reflection and modification in which that mind is directed towards the intended object including the mental objects regarding Western philosophical thought, Edmund Husserl, 2) to study of the way to operative transformation of original mental process and, 3) to analyze various forms of transformed reproduction and a problem of the reproduction. It is found that the transformation of the original mental process in Edmund Husserl’s phenomenology is the ideally inherent process of reproduction of mental process in which the mental process passed through the modificative process together with its contents so as to produce a novel knowledge. The transformative process as such is systematically operated with main following aspects: (1) The mode of giveness (the immanent essence of a concrete sensation-content such as a visual sensation-content in the field of visual sensation-Data that is continually adumbrated from the visual physical objects), (2) the temporal mental processes are to be unified as one stream of mental process, (3) the phase or the temporal horizon which is cosmic time in other ways such as horizon of Now, horizon of Before, and horizon of After, and (4) pure ego, the function of which is to direct its regards to the temporal modes of giveness (immanent essences). By its transformative operation, it is effectively proceeded with three steps. The first is a step of a physical perception of the mental process in which the perceived physical things is used as an essential content for all mental process as they are kept in a memory. The second step is succeeded from the first step which is called a retention or a primary memory; the process of a modification using the immanent object kept in a retention as the initial part of the constitution of an identical object. Then, comes the third step which is the step of a recollection or a second memory; it is to recall the remembered or represented for the perception again. After the whole process has fully accomplished, the remembered or represented is afresh reproduced. However, the reproduction of the remembered or the represented can emerge with two possibilities; one is the vague-reproduced information as without repeating while looking at the reproduced flash; other is afresh one as it is repeated resulting in further perception. However, the reproduction of the remembered can be accurate and perfect depending on two conditions; one is the condition of the perception of physical things and the condition of either clarity or obscurity of the whole object that is re-presented with the mode of mental process.

Propagation dynamics in a diffusive SIQR model for childhood diseases

<p style='text-indent:20px;'>This paper is concerned with the propagation dynamics in a diffusive susceptible-infective nonisolated-isolated-removed model that describes the recurrent outbreaks of childhood diseases. To model the spatial-temporal modes on disease spreading, we study the traveling wave solutions and the initial value problem with special decay condition. When the basic reproduction ratio of the corresponding kinetic system is larger than one, we define a threshold that is the minimal wave speed of traveling wave solutions as well as the spreading speed of some components. From the viewpoint of mathematical epidemiology, the threshold is monotone decreasing in the rate at which individuals leave the infective and enter the isolated classes.</p>

Horizons of memory: childhood memoriesas an experience of figurative comprehension of timein the philosophy of Walter Benjamin

The article outlines Walter Benjamin’s philosophical theory of time, which formed the ba­sis of his conception of history. It is a famous alternative to a number of existing models. Benjamin’s approach to understanding time is characterized by a unique methodology. It is based on artistic images and not on abstract categories and linear patterns of a philosophi­cal and historical discourse. On the one hand, such images allow Benjamin to capture the characteristic properties of a concrete time, which are often difficult for historical sci­ence to grasp, and on the other hand, they make a strong impression on the reader because they require an emotional involvement in the text. The book “Berlin childhood around 1900”, often attributed to the genre of a poetic prose, is a visual representation of Ben­jamin’s philosophical ideas. The fragmentary style of narration and its metaphorical nature are intended to demonstrate a different way of experiencing the present moment – when the signs of the future clearly appear in the fragments of the past. The fusion of all three temporal modes in an instant he calls “Jetztzeit” (just now), which is difficult to articulate in the language of rational metaphysics, is embodied in the allegories of “Berlin child­hood”. Selected fragments of this work are analyzed in the present paper. They capture each of the three time dimensions in the current “now” mode: the fragment “The otter” symbolizes the past, “Loggias” symbolizes the future and “The sock” symbolizes the present. Childhood memories, which do not usually appear in philosophical reflec­tions, serve as a source of the birth of images: on the one hand, they supply sensual mate­rial from personal experience, on the other hand, they suggest a synthesizing principle, be­cause a child is more sensitive to the unity of fiction and reality. Benjamin’s “memorial letter”, seen from this angle, turns out to be a strategy to think poetically about the world, time, and history.

Modeling diurnal variation magnetic fields for mantle induction studies

Summary Accurate models of the spatial structure of ionospheric magnetic fields in the diurnal variation (DV) band (periods of a few hours to a day) would enable use of magneto-variational methods for three-dimensional imaging of upper mantle and transition zone electrical conductivity. Constraints on conductivity at these depths, below what is typically possible with magnetotellurics, would in turn provide valuable constraints on mantle hydration and Earth’s deep water cycle. As a step towards this objective, we present here a novel approach to empirical modeling of global DV magnetic fields. First, we apply frequency domain (FD) principal components analysis (PCA) to ground-based geomagnetic data, to define the dominant spatial and temporal modes of source variability. Spatial modes are restricted to the available data sites, but corresponding temporal modes are effectively continuous in time. Second, we apply FD PCA to gridded surface magnetic fields derived from outputs of the physics-based Thermosphere-Ionosphere-Electrodynamics General Circulation Model (TIEGCM), to determine the dominant modes of spatial variability. The TIEGCM spatial modes are then used as basis functions, to fit (or interpolate) the sparsely sampled data spatial modes. Combining the two steps, we have a FD model of DV band global magnetic fields that is continuous in both space and time. We show that the FD model can easily be transformed back to the time domain (TD) to directly fit time-series data, allowing use of satellite, as well as ground-based, data in the empirical modeling scheme. As an illustration of the methodology we construct global FD and TD models of DV band source fields for 1997-2018. So far, the model uses only ground-based data, from 127 geomagnetic observatories. We show that the model accurately reproduces surface magnetic fields in both active and quiet times, including those at sites not used for model construction. This empirical model, especially with future enhancements, will have many applications: improved imaging of electrical conductivity, ionospheric studies, and improved external field corrections for core and crustal studies.