Scientific principles of classification of regime-forming objects (on the example of water objects)

The study of scientific works, normative legal acts related to issues of classification of regime-forming objects, restrictions on the use of land and land plots made it possible to identify problems related to regime-forming water objects that need to be solved. In accordance with this, the conceptual apparatus related to regime-forming water objects was considered, their list was standardized taking into account the current legal acts and the need for their classification was substantiated. As a result, a classification of regime-forming water objects is proposed, which will allow to further form the limits of restrictions along and around these objects and to develop a classification of restrictions on the use of land and land plots. According to the proposal of the author's team, this classification can become an analogue for the classification of other objects, such as: an object of main pipelines, an energy object, an object of cultural heritage, military objects. It is justified that the creation of a single structure of classification is not possible, since each of these objects, when classified from general to specific, will have different levels of classification and require the development of individual approaches to their classification. Keywords: regime-forming objects, water objects, restrictions on the use of land plots, classification

МОБІЛЬНІ ТЕХНОЛОГІЇ ДЛЯ МОНІТОРИНГУ ПОКАЗНИКІВ СТАНУ ЗДОРОВ’Я

Early diagnosis of the human body in the mode of remote access without visiting specialized medical institutions, automated monitoring of human health at all stages of treatment, rehabilitation and prevention of diseases, obtaining professional medical consultations through the use of special WEB-portals are topical issues of health care, the solution of which is possible only with the use of modern information technologies.Purpose: analysis of existing systems and developing of new methods and mobile software tools, which will allow quickly identifying, analyzing and controlling the psycho-emotional and physical health of a person.Materials and Methods. The concept of the creation of a modular multi-parameter multifunctional mobile system with a service platform, designed for monitoring, long-term observation and control of the basic psychophysiological indicators characterizing the state of the human organism, was developed.Results. Experimental studies of the work of the main modules of the system were practically carried out during the analysis of heart rate in 5 ranges with the help of the MioFuse medical gadget and developed mobile application MioGo [3].Conclusions. The use of information and mobile technologies allows organizing the work with the system in the remote access mode, realization of personalized approach to patients with the observation of data on the screen of the user’s smartphone.РЕЗЮМЕ. Вступ. Своєчасна діагностика стану організму людини у режимі віддаленого доступу без відвідування спеціалізованих медичних закладів, автоматизований моніторинг стану здоров'я людини на всіх етапах лікування, реабілітації та профілактики захворювань, отримання професійних медичних консультацій за допомогою спеціальних WEB-порталів є актуальними питаннями охорони здоров’я, розв’язання яких можливе лише при використанні сучасних інформаційних технологій.Мета. Аналіз існуючих систем та розроблення нових методів та мобільних програмних засобів, що дозволять оперативно визначати, аналізувати та контролювати психоемоційний та фізичний стан здоров'я людини.Матеріали та методи. Розроблено концепцію створення модульної багатопараметричної  мультифункціональної мобільної системи із сервісною платформою, яка призначена для моніторингу, тривалого спостереження та контролю основних психофізіологічних  показників, що характеризують стан організму людини.Результати. Експериментальні дослідження роботи основних модулів системи були практично проведені під час аналізу частоти серцевого ритму у 5 діапазонах за допомогою медичного гаджету MioFuse та розробленого мобільного додатку MioGo.Висновки. Використання інформаційних та мобільних технологій дозволяє організувати роботу із системою у режимі віддаленого доступу, реалізувати персоналізований підхід до пацієнтів з відображенням даних на екрані смартфона користувача

Облік зміни площ лісових угідь у структурі земельного фонду за характеристиками супутникового знімка

Using the example of a mountainous cultivated land environment, we have shown the use of Earth Remote Sensing Data (ERS) technology to control the change of forest land area due to their being cut down. The footage of the Quick Bird satellite image has been used for a simulation of the change in the forest area structure from "forest land" to "deforestation" in which the forest land area shifts into the cut down (deforested) area. It is proved that the histogram characteristics of the RGB Quick Bird satellite image contain information on changes in forest land are structure from "forest land" to "deforestation". It is shown that the median size of the RGB histogram responds to the change in the area of the forest land. The most sensitive out of all RGB channels to changing area dynamics is the channel Green. Physical explanation of this process is carried out using the test fragments "forest land" and "deforestation". We have found out that due to the different texture of the "forest land" and "deforestation" images, their histogram characteristics, the zones of pixel placement, differ in brightness. In the fragment "forest land" the majority of pixels in the histogram is concentrated in the range of 0–100, while for the fragment "deforestation" it shifts to the right to a range of 100–200. Mean square deviation (MSD) – 24 gives a more homogeneous texture of the deforestation, as it creates a graph with a clearly expressive extremum that becomes more and more visible as the cutting down spreads. An analytical dependence between the dynamics of the areas ΔS change at the boundary between "forest land" and "deforestation" and the number of pixels ΔN per the extremum, is obtained. Its considerably high sensitivity has been shown which allows solving the problems of recording the change of forest land areas in the land resource structure using the characteristics of satellite imagery.На прикладі гірського агроландшафтного середовища показано застосування технології дистанційного зондування Землі (ДЗЗ) до контролю зміни площ лісових угідь через їх вирубування. На підставі супутникового знімка QuickBird здійснено моделювання вирубок лісових угідь і отримано зображення територій з різними зонами вирубок. Зміни у структурі площ лісових угідь відбувається способом переміщення лінії розмежування "лісовий покрив – вирубка", за якого площі з лісового покриву переходять до зони вирубок. Доведено, що гістограмні характеристики RGB супутникового знімка QuickBird мають інформативність про зміни площ у структурі "лісовий покрив – вирубка". Показано, що величини медіан усіх RGB-каналів однозначно реагують на зміни площ лісового покрову. Найбільш чутливим до динаміки зміни площ з усіх RGB-каналів є канал Green. Фізичне пояснення цього процесу здійснено на підставі тестових фрагментів "лісовий покрив" і "вирубка". Встановлено, що завдяки різній текстурі "лісового покрову" і "вирубки" їхні гістограмні характеристики відрізняються зонами розміщення пікселів за яскравістю. Для фрагменту "лісовий покрив" основна частина пікселів у гістограмі зосереджена в діапазоні з кодом 0–100, тоді як для фрагменту "вирубка" вона зміщується вправо до діапазону 100–200. Більш однорідна текстура вирубок дає СКВ 24, що створює графік із чітко виразним екстремумом, який стає дедалі помітнішим із поширенням площі вирубок. Отримано аналітичну залежність між динамікою зміни площ ΔS на границі "лісовий покрив – вирубка" і кількості пікселів Nекстр, що припадає на екстремум за кількістю пікселів у діапазоні гістограми 100–200. Показано її достатньо високу чутливість, що дає змогу вирішувати задачі обліку зміни площ лісових угідь у структурі земельного фонду за характеристиками супутникового знімка

Search for subsolar-mass black hole binaries in the second part of Advanced LIGO’s and Advanced Virgo’s third observing run

We describe a search for gravitational waves from compact binaries with at least one component with mass 0.2–1.0 M and mass ratio q ≥ 0.1 in Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) and Advanced Virgo data collected between 2019 November 1, 15:00 UTC and 2020 March 27, 17:00 UTC. No signals were detected. The most significant candidate has a false alarm rate of 0.2 yr−1. We estimate the sensitivity of our search over the entirety of Advanced LIGO’s and Advanced Virgo’s third observing run, and present the most stringent limits to date on the merger rate of binary black holes with at least one subsolar-mass component. We use the upper limits to constrain two fiducial scenarios that could produce subsolar-mass black holes: primordial black holes (PBH) and a model of dissipative dark matter. The PBH model uses recent prescriptions for the merger rate of PBH binaries that include a rate suppression factor to effectively account for PBH early binary disruptions. If the PBHs are monochromatically distributed, we can exclude a dark matter fraction in PBHs fPBH 0.6 (at 90 per cent confidence) in the probed subsolar-mass range. However, if we allow for broad PBH mass distributions, we are unable to rule out fPBH = 1. For the dissipative model, where the dark matter has chemistry that allows a small fraction to cool and collapse into black holes, we find an upper bound fDBH < 10−5 on the fraction of atomic dark matter collapsed into black holes

All-sky search for continuous gravitational waves from isolated neutron stars using Advanced LIGO and Advanced Virgo O3 data

We present results of an all-sky search for continuous gravitational waves which can be produced by spinning neutron stars with an asymmetry around their rotation axis, using data from the third observing run of the Advanced LIGO and Advanced Virgo detectors. Four different analysis methods are used to search in a gravitational-wave frequency band from 10 to 2048 Hz and a first frequency derivative from $-10^{-8}$ to $10^{-9}$ Hz/s. No statistically-significant periodic gravitational-wave signal is observed by any of the four searches. As a result, upper limits on the gravitational-wave strain amplitude $h_0$ are calculated. The best upper limits are obtained in the frequency range of 100 to 200 Hz and they are ${\sim}1.1\times10^{-25}$ at 95\% confidence-level. The minimum upper limit of $1.10\times10^{-25}$ is achieved at a frequency 111.5 Hz. We also place constraints on the rates and abundances of nearby planetary- and asteroid-mass primordial black holes that could give rise to continuous gravitational-wave signals

Advanced Virgo Plus: Future Perspectives

While completing the commissioning phase to prepare the Virgo interferometer for the next joint Observation Run (O4), the Virgo collaboration is also finalizing the design of the next upgrades to the detector to be employed in the following Observation Run (O5). The major upgrade will concern decreasing the thermal noise limit, which will imply using very large test masses and increased laser beam size. But this will not be the only upgrade to be implemented in the break between the O4 and O5 observation runs to increase the Virgo detector strain sensitivity. The paper will cover the challenges linked to this upgrade and implications on the detector's reach and observational potential, reflecting the talk given at 12th Cosmic Ray International Seminar - CRIS 2022 held in September 2022 in Napoli

Search for subsolar-mass black hole binaries in the second part of Advanced LIGO's and Advanced Virgo's third observing run

We describe a search for gravitational waves from compact binaries with at least one component with mass 0.2 $M_\odot$ -- $1.0 M_\odot$ and mass ratio $q \geq 0.1$ in Advanced LIGO and Advanced Virgo data collected between 1 November 2019, 15:00 UTC and 27 March 2020, 17:00 UTC. No signals were detected. The most significant candidate has a false alarm rate of 0.2 $\mathrm{yr}^{-1}$. We estimate the sensitivity of our search over the entirety of Advanced LIGO's and Advanced Virgo's third observing run, and present the most stringent limits to date on the merger rate of binary black holes with at least one subsolar-mass component. We use the upper limits to constrain two fiducial scenarios that could produce subsolar-mass black holes: primordial black holes (PBH) and a model of dissipative dark matter. The PBH model uses recent prescriptions for the merger rate of PBH binaries that include a rate suppression factor to effectively account for PBH early binary disruptions. If the PBHs are monochromatically distributed, we can exclude a dark matter fraction in PBHs $f_\mathrm{PBH} \gtrsim 0.6$ (at 90% confidence) in the probed subsolar-mass range. However, if we allow for broad PBH mass distributions we are unable to rule out $f_\mathrm{PBH} = 1$. For the dissipative model, where the dark matter has chemistry that allows a small fraction to cool and collapse into black holes, we find an upper bound $f_{\mathrm{DBH}} < 10^{-5}$ on the fraction of atomic dark matter collapsed into black holes.Comment: https://dcc.ligo.org/P220013

Open Data from the Third Observing Run of LIGO, Virgo, KAGRA, and GEO

The global network of gravitational-wave observatories now includes five detectors, namely LIGO Hanford, LIGO Livingston, Virgo, KAGRA, and GEO 600. These detectors collected data during their third observing run, O3, composed of three phases: O3a starting in 2019 April and lasting six months, O3b starting in 2019 November and lasting five months, and O3GK starting in 2020 April and lasting two weeks. In this paper we describe these data and various other science products that can be freely accessed through the Gravitational Wave Open Science Center at https://gwosc.org. The main data set, consisting of the gravitational-wave strain time series that contains the astrophysical signals, is released together with supporting data useful for their analysis and documentation, tutorials, as well as analysis software packages

Model-based cross-correlation search for gravitational waves from the low-mass X-ray binary Scorpius X-1 in LIGO O3 data

We present the results of a model-based search for continuous gravitational waves from the low-mass X-ray binary Scorpius X-1 using LIGO detector data from the third observing run of Advanced LIGO, Advanced Virgo and KAGRA. This is a semicoherent search which uses details of the signal model to coherently combine data separated by less than a specified coherence time, which can be adjusted to balance sensitivity with computing cost. The search covered a range of gravitational-wave frequencies from 25Hz to 1600Hz, as well as ranges in orbital speed, frequency and phase determined from observational constraints. No significant detection candidates were found, and upper limits were set as a function of frequency. The most stringent limits, between 100Hz and 200Hz, correspond to an amplitude h0 of about 1e-25 when marginalized isotropically over the unknown inclination angle of the neutron star's rotation axis, or less than 4e-26 assuming the optimal orientation. The sensitivity of this search is now probing amplitudes predicted by models of torque balance equilibrium. For the usual conservative model assuming accretion at the surface of the neutron star, our isotropically-marginalized upper limits are close to the predicted amplitude from about 70Hz to 100Hz; the limits assuming the neutron star spin is aligned with the most likely orbital angular momentum are below the conservative torque balance predictions from 40Hz to 200Hz. Assuming a broader range of accretion models, our direct limits on gravitational-wave amplitude delve into the relevant parameter space over a wide range of frequencies, to 500Hz or more